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bgfx/examples/common/imgui/imgui.cpp

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/*
* Copyright 2011-2014 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
// This code is based on:
//
// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//
// Source altered and distributed from https://github.com/AdrienHerubel/imgui
#include <stdio.h>
#include <bx/string.h>
#include <bx/uint32_t.h>
#include <bx/fpumath.h>
#include <bx/handlealloc.h>
#include "../entry/dbg.h"
#include "imgui.h"
#include "../nanovg/nanovg.h"
#include "vs_imgui_color.bin.h"
#include "fs_imgui_color.bin.h"
#include "vs_imgui_texture.bin.h"
#include "fs_imgui_texture.bin.h"
#include "vs_imgui_image.bin.h"
#include "fs_imgui_image.bin.h"
#include "fs_imgui_image_swizz.bin.h"
#define USE_NANOVG_FONT 0
#define IMGUI_CONFIG_MAX_FONTS 20
#define MAX_TEMP_COORDS 100
#define NUM_CIRCLE_VERTS (8 * 4)
static const int32_t BUTTON_HEIGHT = 20;
static const int32_t SLIDER_HEIGHT = 20;
static const int32_t SLIDER_MARKER_WIDTH = 10;
static const int32_t CHECK_SIZE = 8;
static const int32_t DEFAULT_SPACING = 4;
static const int32_t TEXT_HEIGHT = 8;
static const int32_t SCROLL_AREA_PADDING = 6;
static const int32_t AREA_HEADER = 20;
static const int32_t COLOR_WHEEL_PADDING = 60;
static const float s_tabStops[4] = {150, 210, 270, 330};
static void* imguiMalloc(size_t size, void* /*_userptr*/)
{
return malloc(size);
}
static void imguiFree(void* _ptr, void* /*_userptr*/)
{
free(_ptr);
}
#define IMGUI_MIN(_a, _b) (_a)<(_b)?(_a):(_b)
#define IMGUI_MAX(_a, _b) (_a)>(_b)?(_a):(_b)
#define STBTT_malloc(_x, _y) imguiMalloc(_x, _y)
#define STBTT_free(_x, _y) imguiFree(_x, _y)
#define STB_TRUETYPE_IMPLEMENTATION
#include <stb_truetype/stb_truetype.h>
namespace
{
float sign(float px, float py, float ax, float ay, float bx, float by)
{
return (px - bx) * (ay - by) - (ax - bx) * (py - by);
}
bool pointInTriangle(float px, float py, float ax, float ay, float bx, float by, float cx, float cy)
{
const bool b1 = sign(px, py, ax, ay, bx, by) < 0.0f;
const bool b2 = sign(px, py, bx, by, cx, cy) < 0.0f;
const bool b3 = sign(px, py, cx, cy, ax, ay) < 0.0f;
return ( (b1 == b2) && (b2 == b3) );
}
void closestPointOnLine(float& ox, float &oy, float px, float py, float ax, float ay, float bx, float by)
{
float dx = px - ax;
float dy = py - ay;
float lx = bx - ax;
float ly = by - ay;
float len = sqrtf(lx*lx+ly*ly);
// Normalize.
float invLen = 1.0f/len;
lx*=invLen;
ly*=invLen;
float dot = (dx*lx + dy*ly);
if (dot < 0.0f)
{
ox = ax;
oy = ay;
}
else if (dot > len)
{
ox = bx;
oy = by;
}
else
{
ox = ax + lx*dot;
oy = ay + ly*dot;
}
}
void closestPointOnTriangle(float& ox, float &oy, float px, float py, float ax, float ay, float bx, float by, float cx, float cy)
{
float abx, aby;
float bcx, bcy;
float cax, cay;
closestPointOnLine(abx, aby, px, py, ax, ay, bx, by);
closestPointOnLine(bcx, bcy, px, py, bx, by, cx, cy);
closestPointOnLine(cax, cay, px, py, cx, cy, ax, ay);
const float pabx = px - abx;
const float paby = py - aby;
const float pbcx = px - bcx;
const float pbcy = py - bcy;
const float pcax = px - cax;
const float pcay = py - cay;
const float lab = sqrtf(pabx*pabx+paby*paby);
const float lbc = sqrtf(pbcx*pbcx+pbcy*pbcy);
const float lca = sqrtf(pcax*pcax+pcay*pcay);
const float m = bx::fmin3(lab, lbc, lca);
if (m == lab)
{
ox = abx;
oy = aby;
}
else if (m == lbc)
{
ox = bcx;
oy = bcy;
}
else// if (m == lca).
{
ox = cax;
oy = cay;
}
}
inline float vec2Dot(const float* __restrict _a, const float* __restrict _b)
{
return _a[0]*_b[0] + _a[1]*_b[1];
}
void barycentric(float& _u, float& _v, float& _w
, float _ax, float _ay
, float _bx, float _by
, float _cx, float _cy
, float _px, float _py
)
{
const float v0[2] = { _bx - _ax, _by - _ay };
const float v1[2] = { _cx - _ax, _cy - _ay };
const float v2[2] = { _px - _ax, _py - _ay };
const float d00 = vec2Dot(v0, v0);
const float d01 = vec2Dot(v0, v1);
const float d11 = vec2Dot(v1, v1);
const float d20 = vec2Dot(v2, v0);
const float d21 = vec2Dot(v2, v1);
const float denom = d00 * d11 - d01 * d01;
_v = (d11 * d20 - d01 * d21) / denom;
_w = (d00 * d21 - d01 * d20) / denom;
_u = 1.0f - _v - _w;
}
struct PosColorVertex
{
float m_x;
float m_y;
uint32_t m_abgr;
static void init()
{
ms_decl
.begin()
.add(bgfx::Attrib::Position, 2, bgfx::AttribType::Float)
.add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true)
.end();
}
static bgfx::VertexDecl ms_decl;
};
bgfx::VertexDecl PosColorVertex::ms_decl;
struct PosColorUvVertex
{
float m_x;
float m_y;
float m_u;
float m_v;
uint32_t m_abgr;
static void init()
{
ms_decl
.begin()
.add(bgfx::Attrib::Position, 2, bgfx::AttribType::Float)
.add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Float)
.add(bgfx::Attrib::Color0, 4, bgfx::AttribType::Uint8, true)
.end();
}
static bgfx::VertexDecl ms_decl;
};
bgfx::VertexDecl PosColorUvVertex::ms_decl;
struct PosUvVertex
{
float m_x;
float m_y;
float m_u;
float m_v;
static void init()
{
ms_decl
.begin()
.add(bgfx::Attrib::Position, 2, bgfx::AttribType::Float)
.add(bgfx::Attrib::TexCoord0, 2, bgfx::AttribType::Float)
.end();
}
static bgfx::VertexDecl ms_decl;
};
bgfx::VertexDecl PosUvVertex::ms_decl;
} // namespace
#if !USE_NANOVG_FONT
static float getTextLength(stbtt_bakedchar* _chardata, const char* _text, uint32_t& _numVertices)
{
float xpos = 0;
float len = 0;
uint32_t numVertices = 0;
while (*_text)
{
int32_t ch = (uint8_t)*_text;
if (ch == '\t')
{
for (int32_t ii = 0; ii < 4; ++ii)
{
if (xpos < s_tabStops[ii])
{
xpos = s_tabStops[ii];
break;
}
}
}
else if (ch >= ' '
&& ch < 128)
{
stbtt_bakedchar* b = _chardata + ch - ' ';
int32_t round_x = STBTT_ifloor( (xpos + b->xoff) + 0.5);
len = round_x + b->x1 - b->x0 + 0.5f;
xpos += b->xadvance;
numVertices += 6;
}
++_text;
}
_numVertices = numVertices;
return len;
}
#endif // !USE_NANOVG_FONT
struct Imgui
{
Imgui()
: m_mx(-1)
, m_my(-1)
, m_scroll(0)
, m_active(0)
, m_hot(0)
, m_hotToBe(0)
, m_dragX(0)
, m_dragY(0)
, m_dragOrig(0)
, m_left(false)
, m_leftPressed(false)
, m_leftReleased(false)
, m_isHot(false)
, m_wentActive(false)
, m_insideArea(false)
, m_isActivePresent(false)
, m_checkActivePresence(false)
, m_widgetId(0)
, m_enabledAreaIds(0)
, m_textureWidth(512)
, m_textureHeight(512)
, m_halfTexel(0.0f)
, m_nvg(NULL)
, m_view(31)
, m_viewWidth(0)
, m_viewHeight(0)
, m_currentFontIdx(0)
{
m_areaId.reset();
m_invTextureWidth = 1.0f/m_textureWidth;
m_invTextureHeight = 1.0f/m_textureHeight;
u_imageLod.idx = bgfx::invalidHandle;
u_imageSwizzle.idx = bgfx::invalidHandle;
s_texColor.idx = bgfx::invalidHandle;
m_missingTexture.idx = bgfx::invalidHandle;
m_colorProgram.idx = bgfx::invalidHandle;
m_textureProgram.idx = bgfx::invalidHandle;
m_imageProgram.idx = bgfx::invalidHandle;
m_imageSwizzProgram.idx = bgfx::invalidHandle;
}
ImguiFontHandle createFont(const void* _data, float _fontSize)
{
#if !USE_NANOVG_FONT
const ImguiFontHandle handle = { m_fontHandle.alloc() };
const bgfx::Memory* mem = bgfx::alloc(m_textureWidth * m_textureHeight);
stbtt_BakeFontBitmap( (uint8_t*)_data, 0, _fontSize, mem->data, m_textureWidth, m_textureHeight, 32, 96, m_fonts[handle.idx].m_cdata);
m_fonts[handle.idx].m_texture = bgfx::createTexture2D(m_textureWidth, m_textureHeight, 1, bgfx::TextureFormat::R8, BGFX_TEXTURE_NONE, mem);
m_fonts[handle.idx].m_size = _fontSize;
#else
const ImguiFontHandle handle = { bgfx::invalidHandle };
#endif // !USE_NANOVG_FONT
return handle;
}
void setFont(ImguiFontHandle _handle)
{
if (isValid(_handle) )
{
m_currentFontIdx = _handle.idx;
}
}
bgfx::TextureHandle genMissingTexture(uint32_t _width, uint32_t _height, float _lineWidth = 0.02f)
{
const bgfx::Memory* mem = bgfx::alloc(_width*_height*4);
uint32_t* bgra8 = (uint32_t*)mem->data;
const float sx = 0.70710677f;
const float cx = 0.70710677f;
for (uint32_t yy = 0; yy < _height; ++yy)
{
for (uint32_t xx = 0; xx < _width; ++xx)
{
float px = xx / float(_width) * 2.0f - 1.0f;
float py = yy / float(_height) * 2.0f - 1.0f;
float sum = bx::fpulse(px * cx - py * sx, _lineWidth, -_lineWidth)
+ bx::fpulse(px * sx + py * cx, _lineWidth, -_lineWidth)
;
*bgra8++ = sum >= 1.0f ? 0xffff0000 : 0xffffffff;
}
}
return bgfx::createTexture2D(_width, _height, 0, bgfx::TextureFormat::BGRA8, 0, mem);
}
ImguiFontHandle create(const void* _data, float _fontSize)
{
m_nvg = nvgCreate(512, 512, 1, m_view);
nvgCreateFontMem(m_nvg, "default", (unsigned char*)_data, INT32_MAX, 0);
nvgFontSize(m_nvg, _fontSize);
nvgFontFace(m_nvg, "default");
for (int32_t ii = 0; ii < NUM_CIRCLE_VERTS; ++ii)
{
float a = (float)ii / (float)NUM_CIRCLE_VERTS * (float)(M_PI * 2.0);
m_circleVerts[ii * 2 + 0] = cosf(a);
m_circleVerts[ii * 2 + 1] = sinf(a);
}
PosColorVertex::init();
PosColorUvVertex::init();
PosUvVertex::init();
u_imageLod = bgfx::createUniform("u_imageLod", bgfx::UniformType::Uniform1f);
u_imageSwizzle = bgfx::createUniform("u_swizzle", bgfx::UniformType::Uniform4fv);
s_texColor = bgfx::createUniform("s_texColor", bgfx::UniformType::Uniform1i);
const bgfx::Memory* vs_imgui_color;
const bgfx::Memory* fs_imgui_color;
const bgfx::Memory* vs_imgui_texture;
const bgfx::Memory* fs_imgui_texture;
const bgfx::Memory* vs_imgui_image;
const bgfx::Memory* fs_imgui_image;
const bgfx::Memory* fs_imgui_image_swizz;
switch (bgfx::getRendererType() )
{
case bgfx::RendererType::Direct3D9:
vs_imgui_color = bgfx::makeRef(vs_imgui_color_dx9, sizeof(vs_imgui_color_dx9) );
fs_imgui_color = bgfx::makeRef(fs_imgui_color_dx9, sizeof(fs_imgui_color_dx9) );
vs_imgui_texture = bgfx::makeRef(vs_imgui_texture_dx9, sizeof(vs_imgui_texture_dx9) );
fs_imgui_texture = bgfx::makeRef(fs_imgui_texture_dx9, sizeof(fs_imgui_texture_dx9) );
vs_imgui_image = bgfx::makeRef(vs_imgui_image_dx9, sizeof(vs_imgui_image_dx9) );
fs_imgui_image = bgfx::makeRef(fs_imgui_image_dx9, sizeof(fs_imgui_image_dx9) );
fs_imgui_image_swizz = bgfx::makeRef(fs_imgui_image_swizz_dx9, sizeof(fs_imgui_image_swizz_dx9) );
m_halfTexel = 0.5f;
break;
case bgfx::RendererType::Direct3D11:
vs_imgui_color = bgfx::makeRef(vs_imgui_color_dx11, sizeof(vs_imgui_color_dx11) );
fs_imgui_color = bgfx::makeRef(fs_imgui_color_dx11, sizeof(fs_imgui_color_dx11) );
vs_imgui_texture = bgfx::makeRef(vs_imgui_texture_dx11, sizeof(vs_imgui_texture_dx11) );
fs_imgui_texture = bgfx::makeRef(fs_imgui_texture_dx11, sizeof(fs_imgui_texture_dx11) );
vs_imgui_image = bgfx::makeRef(vs_imgui_image_dx11, sizeof(vs_imgui_image_dx11) );
fs_imgui_image = bgfx::makeRef(fs_imgui_image_dx11, sizeof(fs_imgui_image_dx11) );
fs_imgui_image_swizz = bgfx::makeRef(fs_imgui_image_swizz_dx11, sizeof(fs_imgui_image_swizz_dx11) );
break;
default:
vs_imgui_color = bgfx::makeRef(vs_imgui_color_glsl, sizeof(vs_imgui_color_glsl) );
fs_imgui_color = bgfx::makeRef(fs_imgui_color_glsl, sizeof(fs_imgui_color_glsl) );
vs_imgui_texture = bgfx::makeRef(vs_imgui_texture_glsl, sizeof(vs_imgui_texture_glsl) );
fs_imgui_texture = bgfx::makeRef(fs_imgui_texture_glsl, sizeof(fs_imgui_texture_glsl) );
vs_imgui_image = bgfx::makeRef(vs_imgui_image_glsl, sizeof(vs_imgui_image_glsl) );
fs_imgui_image = bgfx::makeRef(fs_imgui_image_glsl, sizeof(fs_imgui_image_glsl) );
fs_imgui_image_swizz = bgfx::makeRef(fs_imgui_image_swizz_glsl, sizeof(fs_imgui_image_swizz_glsl) );
break;
}
bgfx::ShaderHandle vsh;
bgfx::ShaderHandle fsh;
vsh = bgfx::createShader(vs_imgui_color);
fsh = bgfx::createShader(fs_imgui_color);
m_colorProgram = bgfx::createProgram(vsh, fsh);
bgfx::destroyShader(vsh);
bgfx::destroyShader(fsh);
vsh = bgfx::createShader(vs_imgui_texture);
fsh = bgfx::createShader(fs_imgui_texture);
m_textureProgram = bgfx::createProgram(vsh, fsh);
bgfx::destroyShader(vsh);
bgfx::destroyShader(fsh);
vsh = bgfx::createShader(vs_imgui_image);
fsh = bgfx::createShader(fs_imgui_image);
m_imageProgram = bgfx::createProgram(vsh, fsh);
bgfx::destroyShader(fsh);
// Notice: using the same vsh.
fsh = bgfx::createShader(fs_imgui_image_swizz);
m_imageSwizzProgram = bgfx::createProgram(vsh, fsh);
bgfx::destroyShader(fsh);
bgfx::destroyShader(vsh);
m_missingTexture = genMissingTexture(256, 256, 0.04f);
#if !USE_NANOVG_FONT
const ImguiFontHandle handle = createFont(_data, _fontSize);
m_currentFontIdx = handle.idx;
#else
const ImguiFontHandle handle = { bgfx::invalidHandle };
#endif // !USE_NANOVG_FONT
return handle;
}
void destroy()
{
bgfx::destroyUniform(u_imageLod);
bgfx::destroyUniform(u_imageSwizzle);
bgfx::destroyUniform(s_texColor);
#if !USE_NANOVG_FONT
for (uint16_t ii = 0; ii < IMGUI_CONFIG_MAX_FONTS; ++ii)
{
if (bgfx::isValid(m_fonts[ii].m_texture) )
{
bgfx::destroyTexture(m_fonts[ii].m_texture);
}
}
#endif // !USE_NANOVG_FONT
bgfx::destroyTexture(m_missingTexture);
bgfx::destroyProgram(m_colorProgram);
bgfx::destroyProgram(m_textureProgram);
bgfx::destroyProgram(m_imageProgram);
bgfx::destroyProgram(m_imageSwizzProgram);
nvgDelete(m_nvg);
}
bool anyActive() const
{
return m_active != 0;
}
inline void updatePresence(uint32_t _id)
{
if (m_checkActivePresence && m_active == _id)
{
m_isActivePresent = true;
}
}
uint32_t getId()
{
const uint32_t id = (m_areaId << 16) | m_widgetId++;
updatePresence(id);
return id;
}
bool isActive(uint32_t _id) const
{
return m_active == _id;
}
bool isActiveInputField(uint32_t _id) const
{
return m_inputField == _id;
}
bool isHot(uint32_t _id) const
{
return m_hot == _id;
}
bool inRect(int32_t _x, int32_t _y, int32_t _width, int32_t _height, bool _checkScroll = true) const
{
return (!_checkScroll || m_areas[m_areaId].m_inside)
&& m_mx >= _x
&& m_mx <= _x + _width
&& m_my >= _y
&& m_my <= _y + _height;
}
bool isEnabled(uint16_t _areaId)
{
return (m_enabledAreaIds>>_areaId)&0x1;
}
void setEnabled(uint16_t _areaId)
{
m_enabledAreaIds |= (UINT64_C(1)<<_areaId);
}
void clearInput()
{
m_leftPressed = false;
m_leftReleased = false;
m_scroll = 0;
}
void clearActive()
{
m_active = 0;
// mark all UI for this frame as processed
clearInput();
}
void clearActiveInputField()
{
m_inputField = 0;
}
void setActive(uint32_t _id)
{
m_active = _id;
m_wentActive = true;
m_inputField = 0;
}
void setActiveInputField(uint32_t _id)
{
m_inputField = _id;
}
void setHot(uint32_t _id)
{
m_hotToBe = _id;
}
bool buttonLogic(uint32_t _id, bool _over)
{
bool res = false;
// process down
if (!anyActive() )
{
if (_over)
{
setHot(_id);
}
if (isHot(_id)
&& m_leftPressed)
{
setActive(_id);
}
}
// if button is active, then react on left up
if (isActive(_id) )
{
if (_over)
{
setHot(_id);
}
if (m_leftReleased)
{
if (isHot(_id) )
{
res = true;
}
clearActive();
}
}
if (isHot(_id) )
{
m_isHot = true;
}
return res;
}
void inputLogic(uint32_t _id, bool _over)
{
if (!anyActive() )
{
if (_over)
{
setHot(_id);
}
if (isHot(_id)
&& m_leftPressed)
{
// Toggle active input.
if (isActiveInputField(_id))
{
clearActiveInputField();
}
else
{
setActiveInputField(_id);
}
}
}
if (isHot(_id) )
{
m_isHot = true;
}
if (m_leftPressed
&& !m_isHot
&& m_inputField != 0)
{
clearActiveInputField();
}
}
void updateInput(int32_t _mx, int32_t _my, uint8_t _button, int32_t _scroll, char _inputChar)
{
bool left = (_button & IMGUI_MBUT_LEFT) != 0;
m_mx = _mx;
m_my = _my;
m_leftPressed = !m_left && left;
m_leftReleased = m_left && !left;
m_left = left;
m_scroll = _scroll;
_inputChar = _inputChar & 0x7f; // ASCII or GTFO! :)
m_lastChar = m_char;
m_char = _inputChar;
}
void beginFrame(int32_t _mx, int32_t _my, uint8_t _button, int32_t _scroll, uint16_t _width, uint16_t _height, char _inputChar, uint8_t _view)
{
nvgBeginFrame(m_nvg, _width, _height, 1.0f, NVG_STRAIGHT_ALPHA);
m_view = _view;
m_viewWidth = _width;
m_viewHeight = _height;
bgfx::setViewSeq(_view, true);
bgfx::setViewRect(_view, 0, 0, _width, _height);
float proj[16];
bx::mtxOrtho(proj, 0.0f, (float)_width, (float)_height, 0.0f, 0.0f, 1000.0f);
bgfx::setViewTransform(_view, NULL, proj);
updateInput(_mx, _my, _button, _scroll, _inputChar);
m_hot = m_hotToBe;
m_hotToBe = 0;
m_wentActive = false;
m_isHot = false;
Area& area = getCurrentArea();
area.m_widgetX = 0;
area.m_widgetY = 0;
area.m_widgetW = 0;
m_areaId.reset();
m_widgetId = 0;
m_enabledAreaIds = 0;
m_insideArea = false;
m_isActivePresent = false;
}
void endFrame()
{
if (m_checkActivePresence && !m_isActivePresent)
{
// The ui element is not present any more, reset active field.
m_active = 0;
}
m_checkActivePresence = (0 != m_active);
clearInput();
nvgEndFrame(m_nvg);
}
bool beginScroll(int32_t _height, int32_t* _scroll, bool _enabled)
{
Area& parentArea = getCurrentArea();
m_areaId.next();
const uint32_t scrollId = getId();
Area& area = getCurrentArea();
const uint16_t parentBottom = parentArea.m_scissorY + parentArea.m_scissorHeight;
const uint16_t childBottom = parentArea.m_widgetY + _height;
const uint16_t bottom = IMGUI_MIN(childBottom, parentBottom);
const uint16_t top = IMGUI_MAX(parentArea.m_widgetY, parentArea.m_scissorY);
area.m_contentX = parentArea.m_contentX;
area.m_contentY = parentArea.m_widgetY;
area.m_contentWidth = parentArea.m_contentWidth - (SCROLL_AREA_PADDING*3);
area.m_contentHeight = _height;
area.m_widgetX = parentArea.m_widgetX;
area.m_widgetY = parentArea.m_widgetY + (*_scroll);
area.m_widgetW = parentArea.m_widgetW - (SCROLL_AREA_PADDING*3);
area.m_scissorX = area.m_contentX;
area.m_scissorWidth = area.m_contentWidth;
area.m_scissorY = top;
area.m_scissorHeight = bottom - top;
area.m_scissorEnabled = true;
area.m_height = _height;
area.m_scrollVal = _scroll;
area.m_scrollId = scrollId;
area.m_inside = inRect(parentArea.m_scissorX
, area.m_scissorY
, parentArea.m_scissorWidth
, area.m_scissorHeight
, false
);
parentArea.m_widgetY += (_height + DEFAULT_SPACING);
if (_enabled)
{
setEnabled(m_areaId);
}
m_insideArea |= area.m_inside;
return area.m_inside;
}
void endScroll(int32_t _r)
{
Area& area = getCurrentArea();
area.m_scissorEnabled = false;
const int32_t xx = area.m_contentX + area.m_contentWidth - 1;
const int32_t yy = area.m_contentY;
const int32_t width = SCROLL_AREA_PADDING * 2;
const int32_t height = area.m_height;
const int32_t stop = area.m_contentY + (*area.m_scrollVal);
const int32_t sbot = area.m_widgetY - DEFAULT_SPACING;
const int32_t sh = IMGUI_MAX(1, sbot - stop); // The scrollable area height.
const float barHeight = (float)height / (float)sh;
const int32_t diff = height - sh;
if (diff < 0)
{
*area.m_scrollVal = (*area.m_scrollVal > diff) ? *area.m_scrollVal : diff;
}
else
{
*area.m_scrollVal = 0;
}
if (barHeight < 1.0f)
{
float barY = bx::fsaturate( (float)(yy - stop) / (float)sh);
// Handle scroll bar logic.
const uint32_t hid = area.m_scrollId;
const int32_t hx = xx;
const int32_t hy = yy + (int)(barY * height);
const int32_t hw = width;
const int32_t hh = (int)(barHeight * height);
const int32_t range = height - (hh - 1);
const bool over = inRect(hx, hy, hw, hh);
buttonLogic(hid, over);
if (isActive(hid) )
{
float uu = (float)(hy - yy) / (float)range;
if (m_wentActive)
{
m_dragY = m_my;
m_dragOrig = uu;
}
if (m_dragY != m_my)
{
uu = bx::fsaturate(m_dragOrig + (m_my - m_dragY) / (float)range);
*area.m_scrollVal = (int)(uu * (height - sh) );
}
}
// BG
if (0 == _r)
{
drawRect( (float)xx
, (float)yy
, (float)width
, (float)height
, imguiRGBA(0, 0, 0, 196)
);
}
else
{
drawRoundedRect( (float)xx
, (float)yy
, (float)width
, (float)height
, (float)_r
, imguiRGBA(0, 0, 0, 196)
);
}
// Bar
if (isActive(hid) )
{
if (0 == _r)
{
drawRect( (float)hx
, (float)hy
, (float)hw
, (float)hh
, imguiRGBA(255, 196, 0, 196)
);
}
else
{
drawRoundedRect( (float)hx
, (float)hy
, (float)hw
, (float)hh
, (float)_r
, imguiRGBA(255, 196, 0, 196)
);
}
}
else
{
if (0 == _r)
{
drawRect( (float)hx
, (float)hy
, (float)hw
, (float)hh
, isHot(hid) ? imguiRGBA(255, 196, 0, 96) : imguiRGBA(255, 255, 255, 64)
);
}
else
{
drawRoundedRect( (float)hx
, (float)hy
, (float)hw
, (float)hh
, (float)_r
, isHot(hid) ? imguiRGBA(255, 196, 0, 96) : imguiRGBA(255, 255, 255, 64)
);
}
}
// Handle mouse scrolling.
if (area.m_inside) // && !anyActive() )
{
if (m_scroll)
{
*area.m_scrollVal += bx::uint32_clamp(20 * m_scroll, 0, sh - height);
}
}
}
area.m_inside = false;
m_areaId.previous();
}
bool beginArea(const char* _name, int32_t _x, int32_t _y, int32_t _width, int32_t _height, bool _enabled, int32_t _r)
{
m_areaId.next();
const uint32_t scrollId = getId();
const bool hasTitle = (NULL != _name && '\0' != _name[0]);
const int32_t header = hasTitle ? AREA_HEADER : 0;
Area& area = getCurrentArea();
area.m_x = _x;
area.m_y = _y;
area.m_width = _width;
area.m_height = _height;
area.m_contentX = area.m_x + SCROLL_AREA_PADDING;
area.m_contentY = area.m_y + SCROLL_AREA_PADDING + header;
area.m_contentWidth = area.m_width - SCROLL_AREA_PADDING;
area.m_contentHeight = area.m_height - SCROLL_AREA_PADDING*2 - header;
area.m_scissorX = area.m_contentX;
area.m_scissorY = area.m_y + SCROLL_AREA_PADDING + header;
area.m_scissorHeight = area.m_height - SCROLL_AREA_PADDING*2 - header;
area.m_scissorWidth = area.m_contentWidth;
area.m_scissorEnabled = false;
area.m_widgetX = area.m_contentX;
area.m_widgetY = area.m_contentY;
area.m_widgetW = area.m_width - SCROLL_AREA_PADDING*2;
static int32_t s_zeroScroll = 0;
area.m_scrollVal = &s_zeroScroll;
area.m_scrollId = scrollId;
area.m_inside = inRect(area.m_scissorX, area.m_scissorY, area.m_scissorWidth, area.m_scissorHeight, false);
if (_enabled)
{
setEnabled(m_areaId);
}
if (0 == _r)
{
drawRect( (float)_x
, (float)_y
, (float)_width + 0.3f /*border fix for seamlessly joining two scroll areas*/
, (float)_height + 0.3f /*border fix for seamlessly joining two scroll areas*/
, imguiRGBA(0, 0, 0, 192)
);
}
else
{
drawRoundedRect( (float)_x
, (float)_y
, (float)_width
, (float)_height
, (float)_r
, imguiRGBA(0, 0, 0, 192)
);
}
if (hasTitle)
{
drawText(_x + 10
, _y + 18
, ImguiTextAlign::Left
, _name
, imguiRGBA(255, 255, 255, 128)
);
}
nvgScissor(m_nvg
, float(area.m_x)
, float(area.m_y-1)
, float(area.m_width)
, float(area.m_height+1)
);
area.m_scissorEnabled = true;
m_insideArea |= area.m_inside;
return area.m_inside;
}
void endArea()
{
nvgResetScissor(m_nvg);
}
bool button(const char* _text, bool _enabled, ImguiAlign::Enum _align, uint32_t _rgb0, int32_t _r)
{
const uint32_t id = getId();
Area& area = getCurrentArea();
const int32_t yy = area.m_widgetY;
const int32_t height = BUTTON_HEIGHT;
area.m_widgetY += BUTTON_HEIGHT + DEFAULT_SPACING;
int32_t xx;
int32_t width;
if (ImguiAlign::Left == _align)
{
xx = area.m_contentX + SCROLL_AREA_PADDING;
width = area.m_widgetW;
}
else if (ImguiAlign::LeftIndented == _align
|| ImguiAlign::Right == _align)
{
xx = area.m_widgetX;
width = area.m_widgetW-1; //TODO: -1 !
}
else //if (ImguiAlign::Center == _align
//|| ImguiAlign::CenterIndented == _align).
{
xx = area.m_widgetX;
width = area.m_widgetW - (area.m_widgetX-area.m_scissorX);
}
const bool enabled = _enabled && isEnabled(m_areaId);
const bool over = enabled && inRect(xx, yy, width, height);
const bool res = buttonLogic(id, over);
const uint32_t rgb0 = _rgb0&0x00ffffff;
if (0 == _r)
{
drawRect( (float)xx
, (float)yy
, (float)width
, (float)height
, rgb0 | imguiRGBA(0, 0, 0, isActive(id) ? 196 : 96)
);
}
else
{
drawRoundedRect( (float)xx
, (float)yy
, (float)width
, (float)height
, (float)_r
, rgb0 | imguiRGBA(0, 0, 0, isActive(id) ? 196 : 96)
);
}
if (enabled)
{
drawText(xx + BUTTON_HEIGHT / 2
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _text
, isHot(id) ? imguiRGBA(255, 196, 0, 255) : imguiRGBA(255, 255, 255, 200)
);
}
else
{
drawText(xx + BUTTON_HEIGHT / 2
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _text
, imguiRGBA(128, 128, 128, 200)
);
}
return res;
}
bool item(const char* _text, bool _enabled)
{
const uint32_t id = getId();
Area& area = getCurrentArea();
const int32_t xx = area.m_widgetX;
const int32_t yy = area.m_widgetY;
const int32_t width = area.m_widgetW;
const int32_t height = BUTTON_HEIGHT;
area.m_widgetY += BUTTON_HEIGHT + DEFAULT_SPACING;
const bool enabled = _enabled && isEnabled(m_areaId);
const bool over = enabled && inRect(xx, yy, width, height);
const bool res = buttonLogic(id, over);
if (isHot(id) )
{
drawRoundedRect( (float)xx
, (float)yy
, (float)width
, (float)height
, 2.0f
, imguiRGBA(255, 196, 0, isActive(id) ? 196 : 96)
);
}
if (enabled)
{
drawText(xx + BUTTON_HEIGHT / 2
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _text
, imguiRGBA(255, 255, 255, 200)
);
}
else
{
drawText(xx + BUTTON_HEIGHT / 2
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _text
, imguiRGBA(128, 128, 128, 200)
);
}
return res;
}
bool check(const char* _text, bool _checked, bool _enabled)
{
const uint32_t id = getId();
Area& area = getCurrentArea();
const int32_t xx = area.m_widgetX;
const int32_t yy = area.m_widgetY;
const int32_t width = area.m_widgetW;
const int32_t height = BUTTON_HEIGHT;
area.m_widgetY += BUTTON_HEIGHT + DEFAULT_SPACING;
const bool enabled = _enabled && isEnabled(m_areaId);
const bool over = enabled && inRect(xx, yy, width, height);
const bool res = buttonLogic(id, over);
const int32_t cx = xx + BUTTON_HEIGHT / 2 - CHECK_SIZE / 2;
const int32_t cy = yy + BUTTON_HEIGHT / 2 - CHECK_SIZE / 2;
drawRoundedRect( (float)cx - 3
, (float)cy - 3
, (float)CHECK_SIZE + 6
, (float)CHECK_SIZE + 6
, 4
, imguiRGBA(128, 128, 128, isActive(id) ? 196 : 96)
);
if (_checked)
{
if (enabled)
{
drawRoundedRect( (float)cx
, (float)cy
, (float)CHECK_SIZE
, (float)CHECK_SIZE
, (float)CHECK_SIZE / 2 - 1
, imguiRGBA(255, 255, 255, isActive(id) ? 255 : 200)
);
}
else
{
drawRoundedRect( (float)cx
, (float)cy
, (float)CHECK_SIZE
, (float)CHECK_SIZE
, (float)CHECK_SIZE / 2 - 1
, imguiRGBA(128, 128, 128, 200)
);
}
}
if (enabled)
{
drawText(xx + BUTTON_HEIGHT
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _text
, isHot(id) ? imguiRGBA(255, 196, 0, 255) : imguiRGBA(255, 255, 255, 200)
);
}
else
{
drawText(xx + BUTTON_HEIGHT
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _text
, imguiRGBA(128, 128, 128, 200)
);
}
return res;
}
void input(const char* _label, char* _str, uint32_t _len, bool _enabled, ImguiAlign::Enum _align, int32_t _r)
{
const uint32_t id = getId();
Area& area = getCurrentArea();
const int32_t yy = area.m_widgetY;
area.m_widgetY += BUTTON_HEIGHT + DEFAULT_SPACING;
int32_t xx;
int32_t width;
if (ImguiAlign::Left == _align)
{
xx = area.m_contentX + SCROLL_AREA_PADDING;
width = area.m_widgetW;
}
else if (ImguiAlign::LeftIndented == _align
|| ImguiAlign::Right == _align)
{
xx = area.m_widgetX;
width = area.m_widgetW-1; //TODO: -1 !
}
else //if (ImguiAlign::Center == _align
//|| ImguiAlign::CenterIndented == _align).
{
xx = area.m_widgetX;
width = area.m_widgetW - (area.m_widgetX-area.m_scissorX);
}
const bool drawLabel = (NULL != _label && _label[0] != '\0');
if (drawLabel)
{
drawText(xx
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _label
, imguiRGBA(255, 255, 255, 200)
);
}
// Handle input.
if (isActiveInputField(id) )
{
const size_t cursor = size_t(strlen(_str));
if (m_char == 0x08) //backspace
{
_str[cursor-1] = '\0';
}
else if (m_char == 0x0d || m_char == 0x1b) //enter or escape
{
clearActiveInputField();
}
else if (cursor < _len-1
&& 0 != m_char)
{
_str[cursor] = m_char;
_str[cursor+1] = '\0';
}
}
// Draw input area.
const int32_t height = BUTTON_HEIGHT;
if (drawLabel)
{
uint32_t numVertices = 0; //unused
const int32_t labelWidth = int32_t(getTextLength(m_fonts[m_currentFontIdx].m_cdata, _label, numVertices));
xx += (labelWidth + 6);
width -= (labelWidth + 6);
}
const bool enabled = _enabled && isEnabled(m_areaId);
const bool over = enabled && inRect(xx, yy, width, height);
inputLogic(id, over);
if (0 == _r)
{
drawRect( (float)xx
, (float)yy
, (float)width
, (float)height
, isActiveInputField(id)?imguiRGBA(255,196,0,255):imguiRGBA(128,128,128,96)
);
}
else
{
drawRoundedRect( (float)xx
, (float)yy
, (float)width
, (float)height
, (float)_r
, isActiveInputField(id)?imguiRGBA(255,196,0,255):imguiRGBA(128,128,128,96)
);
}
if (isActiveInputField(id) )
{
drawText(xx + 6
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _str
, imguiRGBA(0, 0, 0, 255)
);
}
else
{
drawText(xx + 6
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _str
, isHot(id) ? imguiRGBA(255,196,0,255) : imguiRGBA(255,255,255,255)
);
}
}
uint8_t tabs(uint8_t _selected, bool _enabled, ImguiAlign::Enum _align, int32_t _height, int32_t _r, va_list _argList)
{
BX_UNUSED(_align);
uint8_t count;
const char* titles[16];
const char* str = va_arg(_argList, const char*);
for (count = 0; str != NULL || count >= 16; ++count, str = va_arg(_argList, const char*) )
{
titles[count] = str;
}
Area& area = getCurrentArea();
const int32_t yy = area.m_widgetY;
area.m_widgetY += _height + DEFAULT_SPACING;
int32_t xx;
int32_t width;
if (ImguiAlign::Left == _align)
{
xx = area.m_contentX + SCROLL_AREA_PADDING;
width = area.m_widgetW;
}
else if (ImguiAlign::LeftIndented == _align
|| ImguiAlign::Right == _align)
{
xx = area.m_widgetX;
width = area.m_widgetW-1; //TODO: -1 !
}
else //if (ImguiAlign::Center == _align
//|| ImguiAlign::CenterIndented == _align).
{
xx = area.m_widgetX;
width = area.m_widgetW - (area.m_widgetX-area.m_scissorX);
}
uint8_t selected = _selected;
const int32_t tabWidth = width / count;
const int32_t tabWidthHalf = width / (count*2);
const int32_t textY = yy + _height/2 + int32_t(m_fonts[m_currentFontIdx].m_size)/2 - 2;
if (0 == _r)
{
drawRect( (float)xx
, (float)yy
, (float)width
, (float)_height
, imguiRGBA(128, 128, 128, 96)
);
}
else
{
drawRoundedRect( (float)xx
, (float)yy
, (float)width
, (float)_height
, (float)_r
, imguiRGBA(128, 128, 128, 96)
);
}
for (uint8_t ii = 0; ii < count; ++ii)
{
const uint32_t id = getId();
int32_t buttonX = xx + ii*tabWidth;
int32_t textX = buttonX + tabWidthHalf;
const bool enabled = _enabled && isEnabled(m_areaId);
const bool over = enabled && inRect(buttonX, yy, tabWidth, _height);
const bool res = buttonLogic(id, over);
if (res)
{
selected = ii;
}
uint32_t textColor;
if (ii == selected)
{
textColor = enabled?imguiRGBA(0,0,0,255):imguiRGBA(255,255,255,100);
if (0 == _r)
{
drawRect( (float)buttonX
, (float)yy
, (float)tabWidth
, (float)_height
, enabled?imguiRGBA(255,196,0,200):imguiRGBA(128,128,128,96)
);
}
else
{
drawRoundedRect( (float)buttonX
, (float)yy
, (float)tabWidth
, (float)_height
, (float)_r
, enabled?imguiRGBA(255,196,0,200):imguiRGBA(128,128,128,96)
);
}
}
else
{
textColor = isHot(id) ? imguiRGBA(255, 196, 0, enabled?255:100) : imguiRGBA(255, 255, 255, enabled?200:100);
}
drawText(textX
, textY
, ImguiTextAlign::Center
, titles[ii]
, textColor
);
}
return selected;
}
void image(bgfx::TextureHandle _image, float _lod, int32_t _width, int32_t _height, ImguiAlign::Enum _align)
{
Area& area = getCurrentArea();
int32_t xx;
if (ImguiAlign::Left == _align)
{
xx = area.m_contentX + SCROLL_AREA_PADDING;
}
else if (ImguiAlign::LeftIndented == _align)
{
xx = area.m_widgetX;
}
else if (ImguiAlign::Center == _align)
{
xx = area.m_contentX + (area.m_widgetW-_width)/2;
}
else if (ImguiAlign::CenterIndented == _align)
{
xx = (area.m_widgetX + area.m_widgetW + area.m_contentX - _width)/2;
}
else //if (ImguiAlign::Right == _align).
{
xx = area.m_contentX + area.m_widgetW - _width;
}
const int32_t yy = area.m_widgetY;
area.m_widgetY += _height + DEFAULT_SPACING;
screenQuad(xx, yy, _width, _height);
bgfx::setUniform(u_imageLod, &_lod);
bgfx::setTexture(0, s_texColor, bgfx::isValid(_image) ? _image : m_missingTexture);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
bgfx::setProgram(m_imageProgram);
setCurrentScissor();
bgfx::submit(m_view);
}
void image(bgfx::TextureHandle _image, float _lod, float _width, float _aspect, ImguiAlign::Enum _align)
{
const float width = _width*float(getCurrentArea().m_widgetW);
const float height = width/_aspect;
image(_image, _lod, int32_t(width), int32_t(height), _align);
}
void imageChannel(bgfx::TextureHandle _image, uint8_t _channel, float _lod, int32_t _width, int32_t _height, ImguiAlign::Enum _align)
{
BX_CHECK(_channel < 4, "Channel param must be from 0 to 3!");
Area& area = getCurrentArea();
int32_t xx;
if (ImguiAlign::Left == _align)
{
xx = area.m_contentX + SCROLL_AREA_PADDING;
}
else if (ImguiAlign::LeftIndented == _align)
{
xx = area.m_widgetX;
}
else if (ImguiAlign::Center == _align)
{
xx = area.m_contentX + (area.m_widgetW-_width)/2;
}
else if (ImguiAlign::CenterIndented == _align)
{
xx = (area.m_widgetX + area.m_widgetW + area.m_contentX - _width)/2;
}
else //if (ImguiAlign::Right == _align).
{
xx = area.m_contentX + area.m_widgetW - _width;
}
const int32_t yy = area.m_widgetY;
area.m_widgetY += _height + DEFAULT_SPACING;
screenQuad(xx, yy, _width, _height);
bgfx::setUniform(u_imageLod, &_lod);
float swizz[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
swizz[_channel] = 1.0f;
bgfx::setUniform(u_imageSwizzle, swizz);
bgfx::setTexture(0, s_texColor, bgfx::isValid(_image) ? _image : m_missingTexture);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
bgfx::setProgram(m_imageSwizzProgram);
setCurrentScissor();
bgfx::submit(m_view);
}
void imageChannel(bgfx::TextureHandle _image, uint8_t _channel, float _lod, float _width, float _aspect, ImguiAlign::Enum _align)
{
const float width = _width*float(getCurrentArea().m_widgetW);
const float height = width/_aspect;
imageChannel(_image, _channel, _lod, int32_t(width), int32_t(height), _align);
}
bool collapse(const char* _text, const char* _subtext, bool _checked, bool _enabled)
{
const uint32_t id = getId();
Area& area = getCurrentArea();
const int32_t xx = area.m_widgetX;
const int32_t yy = area.m_widgetY;
const int32_t width = area.m_widgetW;
const int32_t height = BUTTON_HEIGHT;
area.m_widgetY += BUTTON_HEIGHT + DEFAULT_SPACING;
const int32_t cx = xx + BUTTON_HEIGHT/2 - CHECK_SIZE/2;
const int32_t cy = yy + BUTTON_HEIGHT/2 - CHECK_SIZE/2 + DEFAULT_SPACING/2;
const int32_t textY = yy + BUTTON_HEIGHT/2 + TEXT_HEIGHT/2 + DEFAULT_SPACING/2;
const bool enabled = _enabled && isEnabled(m_areaId);
const bool over = enabled && inRect(xx, yy, width, height);
const bool res = buttonLogic(id, over);
if (_checked)
{
drawTriangle(cx
, cy
, CHECK_SIZE
, CHECK_SIZE
, TriangleOrientation::Up
, imguiRGBA(255, 255, 255, isActive(id) ? 255 : 200)
);
}
else
{
drawTriangle(cx
, cy
, CHECK_SIZE
, CHECK_SIZE
, TriangleOrientation::Right
, imguiRGBA(255, 255, 255, isActive(id) ? 255 : 200)
);
}
if (enabled)
{
drawText(xx + BUTTON_HEIGHT
, textY
, ImguiTextAlign::Left
, _text
, isHot(id) ? imguiRGBA(255, 196, 0, 255) : imguiRGBA(255, 255, 255, 200)
);
}
else
{
drawText(xx + BUTTON_HEIGHT
, textY
, ImguiTextAlign::Left
, _text
, imguiRGBA(128, 128, 128, 200)
);
}
if (_subtext)
{
drawText(xx + width - BUTTON_HEIGHT / 2
, textY
, ImguiTextAlign::Right
, _subtext
, imguiRGBA(255, 255, 255, 128)
);
}
return res;
}
bool borderButton(ImguiBorder::Enum _border, bool _checked, bool _enabled)
{
// Since border button isn't part of any area, just use this custom/unique areaId.
const uint16_t areaId = UINT16_MAX-1;
const uint32_t id = (areaId << 16) | m_widgetId++;
updatePresence(id);
const int32_t triSize = 12;
const int32_t borderSize = 15;
int32_t xx;
int32_t yy;
int32_t width;
int32_t height;
int32_t triX;
int32_t triY;
TriangleOrientation::Enum orientation;
if (ImguiBorder::Left == _border)
{
xx = -borderSize;
yy = 0;
width = 2*borderSize;
height = m_viewHeight;
triX = 0;
triY = (m_viewHeight-triSize)/2;
orientation = _checked ? TriangleOrientation::Left : TriangleOrientation::Right;
}
else if (ImguiBorder::Right == _border)
{
xx = m_viewWidth - borderSize;
yy = 0;
width = 2*borderSize;
height = m_viewHeight;
triX = m_viewWidth - triSize - 2;
triY = (m_viewHeight-width)/2;
orientation = _checked ? TriangleOrientation::Right : TriangleOrientation::Left;
}
else if (ImguiBorder::Top == _border)
{
xx = 0;
yy = -borderSize;
width = m_viewWidth;
height = 2*borderSize;
triX = (m_viewWidth-triSize)/2;
triY = 0;
orientation = _checked ? TriangleOrientation::Up : TriangleOrientation::Down;
}
else //if (ImguiBorder::Bottom == _border).
{
xx = 0;
yy = m_viewHeight - borderSize;
width = m_viewWidth;
height = 2*borderSize;
triX = (m_viewWidth-triSize)/2;
triY = m_viewHeight-triSize;
orientation = _checked ? TriangleOrientation::Down : TriangleOrientation::Up;
}
const bool over = _enabled && inRect(xx, yy, width, height, false);
const bool res = buttonLogic(id, over);
drawRoundedRect( (float)xx
, (float)yy
, (float)width
, (float)height
, 0.0f
, isActive(id) ? imguiRGBA(23, 23, 23, 192) : imguiRGBA(0, 0, 0, 222)
);
drawTriangle( triX
, triY
, triSize
, triSize
, orientation
, isHot(id) ? imguiRGBA(255, 196, 0, 222) : imguiRGBA(255, 255, 255, 192)
);
return res;
}
void labelVargs(const char* _format, va_list _argList, uint32_t _rgba)
{
char temp[8192];
char* out = temp;
int32_t len = bx::vsnprintf(out, sizeof(temp), _format, _argList);
if ( (int32_t)sizeof(temp) < len)
{
out = (char*)alloca(len+1);
len = bx::vsnprintf(out, len, _format, _argList);
}
out[len] = '\0';
Area& area = getCurrentArea();
const int32_t xx = area.m_widgetX;
const int32_t yy = area.m_widgetY;
area.m_widgetY += BUTTON_HEIGHT;
drawText(xx
, yy + BUTTON_HEIGHT/2 + TEXT_HEIGHT/2
, ImguiTextAlign::Left
, out
, _rgba
);
}
void value(const char* _text)
{
Area& area = getCurrentArea();
const int32_t xx = area.m_widgetX;
const int32_t yy = area.m_widgetY;
const int32_t ww = area.m_widgetW;
area.m_widgetY += BUTTON_HEIGHT;
drawText(xx + ww - BUTTON_HEIGHT / 2
, yy + BUTTON_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Right
, _text
, imguiRGBA(255, 255, 255, 200)
);
}
bool slider(const char* _text, float& _val, float _vmin, float _vmax, float _vinc, bool _enabled, ImguiAlign::Enum _align)
{
const uint32_t id = getId();
Area& area = getCurrentArea();
const int32_t yy = area.m_widgetY;
const int32_t height = SLIDER_HEIGHT;
area.m_widgetY += SLIDER_HEIGHT + DEFAULT_SPACING;
int32_t xx;
int32_t width;
if (ImguiAlign::Left == _align)
{
xx = area.m_contentX + SCROLL_AREA_PADDING;
width = area.m_widgetW;
}
else if (ImguiAlign::LeftIndented == _align
|| ImguiAlign::Right == _align)
{
xx = area.m_widgetX;
width = area.m_widgetW;
}
else //if (ImguiAlign::Center == _align
//|| ImguiAlign::CenterIndented == _align).
{
xx = area.m_widgetX;
width = area.m_widgetW - (area.m_widgetX-area.m_scissorX);
}
drawRoundedRect( (float)xx, (float)yy, (float)width, (float)height, 4.0f, imguiRGBA(0, 0, 0, 128) );
const int32_t range = width - SLIDER_MARKER_WIDTH;
float uu = bx::fsaturate( (_val - _vmin) / (_vmax - _vmin) );
int32_t m = (int)(uu * range);
bool valChanged = false;
const bool enabled = _enabled && isEnabled(m_areaId);
const bool over = enabled && inRect(xx + m, yy, SLIDER_MARKER_WIDTH, SLIDER_HEIGHT);
const bool res = buttonLogic(id, over);
if (isActive(id) )
{
if (m_wentActive)
{
m_dragX = m_mx;
m_dragOrig = uu;
}
if (m_dragX != m_mx)
{
uu = bx::fsaturate(m_dragOrig + (float)(m_mx - m_dragX) / (float)range);
_val = _vmin + uu * (_vmax - _vmin);
_val = floorf(_val / _vinc + 0.5f) * _vinc; // Snap to vinc
m = (int)(uu * range);
valChanged = true;
}
}
if (isActive(id) )
{
drawRoundedRect( (float)(xx + m)
, (float)yy
, (float)SLIDER_MARKER_WIDTH
, (float)SLIDER_HEIGHT
, 4.0f
, imguiRGBA(255, 255, 255, 255)
);
}
else
{
drawRoundedRect( (float)(xx + m)
, (float)yy
, (float)SLIDER_MARKER_WIDTH
, (float)SLIDER_HEIGHT
, 4.0f
, isHot(id) ? imguiRGBA(255, 196, 0, 128) : imguiRGBA(255, 255, 255, 64)
);
}
// TODO: fix this, take a look at 'nicenum'.
int32_t digits = (int)(ceilf(log10f(_vinc) ) );
char fmt[16];
bx::snprintf(fmt, 16, "%%.%df", digits >= 0 ? 0 : -digits);
char msg[128];
bx::snprintf(msg, 128, fmt, _val);
if (enabled)
{
drawText(xx + SLIDER_HEIGHT / 2
, yy + SLIDER_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _text
, isHot(id) ? imguiRGBA(255, 196, 0, 255) : imguiRGBA(255, 255, 255, 200)
);
drawText(xx + width - SLIDER_HEIGHT / 2
, yy + SLIDER_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Right
, msg
, isHot(id) ? imguiRGBA(255, 196, 0, 255) : imguiRGBA(255, 255, 255, 200)
);
}
else
{
drawText(xx + SLIDER_HEIGHT / 2
, yy + SLIDER_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Left
, _text
, imguiRGBA(128, 128, 128, 200)
);
drawText(xx + width - SLIDER_HEIGHT / 2
, yy + SLIDER_HEIGHT / 2 + TEXT_HEIGHT / 2
, ImguiTextAlign::Right
, msg
, imguiRGBA(128, 128, 128, 200)
);
}
return res || valChanged;
}
void indent(uint16_t _width)
{
Area& area = getCurrentArea();
area.m_widgetX += _width;
area.m_widgetW -= _width;
}
void unindent(uint16_t _width)
{
Area& area = getCurrentArea();
area.m_widgetX -= _width;
area.m_widgetW += _width;
}
void separator(uint16_t _height)
{
Area& area = getCurrentArea();
area.m_widgetY += _height;
}
void separatorLine(uint16_t _height)
{
Area& area = getCurrentArea();
const int32_t rectWidth = area.m_widgetW;
const int32_t rectHeight = 1;
const int32_t xx = area.m_widgetX;
const int32_t yy = area.m_widgetY + _height/2 - rectHeight;
area.m_widgetY += _height;
drawRect( (float)xx
, (float)yy
, (float)rectWidth
, (float)rectHeight
, imguiRGBA(255, 255, 255, 32)
);
}
void drawPolygon(const float* _coords, uint32_t _numCoords, float _r, uint32_t _abgr)
{
_numCoords = bx::uint32_min(_numCoords, MAX_TEMP_COORDS);
for (uint32_t ii = 0, jj = _numCoords - 1; ii < _numCoords; jj = ii++)
{
const float* v0 = &_coords[jj * 2];
const float* v1 = &_coords[ii * 2];
float dx = v1[0] - v0[0];
float dy = v1[1] - v0[1];
float d = sqrtf(dx * dx + dy * dy);
if (d > 0)
{
d = 1.0f / d;
dx *= d;
dy *= d;
}
m_tempNormals[jj * 2 + 0] = dy;
m_tempNormals[jj * 2 + 1] = -dx;
}
for (uint32_t ii = 0, jj = _numCoords - 1; ii < _numCoords; jj = ii++)
{
float dlx0 = m_tempNormals[jj * 2 + 0];
float dly0 = m_tempNormals[jj * 2 + 1];
float dlx1 = m_tempNormals[ii * 2 + 0];
float dly1 = m_tempNormals[ii * 2 + 1];
float dmx = (dlx0 + dlx1) * 0.5f;
float dmy = (dly0 + dly1) * 0.5f;
float dmr2 = dmx * dmx + dmy * dmy;
if (dmr2 > 0.000001f)
{
float scale = 1.0f / dmr2;
if (scale > 10.0f)
{
scale = 10.0f;
}
dmx *= scale;
dmy *= scale;
}
m_tempCoords[ii * 2 + 0] = _coords[ii * 2 + 0] + dmx * _r;
m_tempCoords[ii * 2 + 1] = _coords[ii * 2 + 1] + dmy * _r;
}
uint32_t numVertices = _numCoords*6 + (_numCoords-2)*3;
if (bgfx::checkAvailTransientVertexBuffer(numVertices, PosColorVertex::ms_decl) )
{
bgfx::TransientVertexBuffer tvb;
bgfx::allocTransientVertexBuffer(&tvb, numVertices, PosColorVertex::ms_decl);
uint32_t trans = _abgr&0xffffff;
PosColorVertex* vertex = (PosColorVertex*)tvb.data;
for (uint32_t ii = 0, jj = _numCoords-1; ii < _numCoords; jj = ii++)
{
vertex->m_x = _coords[ii*2+0];
vertex->m_y = _coords[ii*2+1];
vertex->m_abgr = _abgr;
++vertex;
vertex->m_x = _coords[jj*2+0];
vertex->m_y = _coords[jj*2+1];
vertex->m_abgr = _abgr;
++vertex;
vertex->m_x = m_tempCoords[jj*2+0];
vertex->m_y = m_tempCoords[jj*2+1];
vertex->m_abgr = trans;
++vertex;
vertex->m_x = m_tempCoords[jj*2+0];
vertex->m_y = m_tempCoords[jj*2+1];
vertex->m_abgr = trans;
++vertex;
vertex->m_x = m_tempCoords[ii*2+0];
vertex->m_y = m_tempCoords[ii*2+1];
vertex->m_abgr = trans;
++vertex;
vertex->m_x = _coords[ii*2+0];
vertex->m_y = _coords[ii*2+1];
vertex->m_abgr = _abgr;
++vertex;
}
for (uint32_t ii = 2; ii < _numCoords; ++ii)
{
vertex->m_x = _coords[0];
vertex->m_y = _coords[1];
vertex->m_abgr = _abgr;
++vertex;
vertex->m_x = _coords[(ii-1)*2+0];
vertex->m_y = _coords[(ii-1)*2+1];
vertex->m_abgr = _abgr;
++vertex;
vertex->m_x = _coords[ii*2+0];
vertex->m_y = _coords[ii*2+1];
vertex->m_abgr = _abgr;
++vertex;
}
bgfx::setVertexBuffer(&tvb);
bgfx::setState(0
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_ALPHA_WRITE
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA)
);
bgfx::setProgram(m_colorProgram);
setCurrentScissor();
bgfx::submit(m_view);
}
}
void drawRect(float _x, float _y, float w, float h, uint32_t _argb, float _fth = 1.0f)
{
float verts[4 * 2] =
{
_x + 0.5f, _y + 0.5f,
_x + w - 0.5f, _y + 0.5f,
_x + w - 0.5f, _y + h - 0.5f,
_x + 0.5f, _y + h - 0.5f,
};
drawPolygon(verts, 4, _fth, _argb);
}
void drawRoundedRect(float _x, float _y, float w, float h, float r, uint32_t _argb, float _fth = 1.0f)
{
const uint32_t num = NUM_CIRCLE_VERTS / 4;
const float* cverts = m_circleVerts;
float verts[(num + 1) * 4 * 2];
float* vv = verts;
for (uint32_t ii = 0; ii <= num; ++ii)
{
*vv++ = _x + w - r + cverts[ii * 2] * r;
*vv++ = _y + h - r + cverts[ii * 2 + 1] * r;
}
for (uint32_t ii = num; ii <= num * 2; ++ii)
{
*vv++ = _x + r + cverts[ii * 2] * r;
*vv++ = _y + h - r + cverts[ii * 2 + 1] * r;
}
for (uint32_t ii = num * 2; ii <= num * 3; ++ii)
{
*vv++ = _x + r + cverts[ii * 2] * r;
*vv++ = _y + r + cverts[ii * 2 + 1] * r;
}
for (uint32_t ii = num * 3; ii < num * 4; ++ii)
{
*vv++ = _x + w - r + cverts[ii * 2] * r;
*vv++ = _y + r + cverts[ii * 2 + 1] * r;
}
*vv++ = _x + w - r + cverts[0] * r;
*vv++ = _y + r + cverts[1] * r;
drawPolygon(verts, (num + 1) * 4, _fth, _argb);
}
void drawLine(float _x0, float _y0, float _x1, float _y1, float _r, uint32_t _abgr, float _fth = 1.0f)
{
float dx = _x1 - _x0;
float dy = _y1 - _y0;
float d = sqrtf(dx * dx + dy * dy);
if (d > 0.0001f)
{
d = 1.0f / d;
dx *= d;
dy *= d;
}
float nx = dy;
float ny = -dx;
float verts[4 * 2];
_r -= _fth;
_r *= 0.5f;
if (_r < 0.01f)
{
_r = 0.01f;
}
dx *= _r;
dy *= _r;
nx *= _r;
ny *= _r;
verts[0] = _x0 - dx - nx;
verts[1] = _y0 - dy - ny;
verts[2] = _x0 - dx + nx;
verts[3] = _y0 - dy + ny;
verts[4] = _x1 + dx + nx;
verts[5] = _y1 + dy + ny;
verts[6] = _x1 + dx - nx;
verts[7] = _y1 + dy - ny;
drawPolygon(verts, 4, _fth, _abgr);
}
struct TriangleOrientation
{
enum Enum
{
Left,
Right,
Up,
Down,
};
};
void drawTriangle(int32_t _x, int32_t _y, int32_t _width, int32_t _height, TriangleOrientation::Enum _orientation, uint32_t _abgr)
{
if (TriangleOrientation::Left == _orientation)
{
const float verts[3 * 2] =
{
(float)_x + 0.5f + (float)_width * 1.0f, (float)_y + 0.5f,
(float)_x + 0.5f, (float)_y + 0.5f + (float)_height / 2.0f - 0.5f,
(float)_x + 0.5f + (float)_width * 1.0f, (float)_y + 0.5f + (float)_height - 1.0f,
};
drawPolygon(verts, 3, 1.0f, _abgr);
}
else if (TriangleOrientation::Right == _orientation)
{
const float verts[3 * 2] =
{
(float)_x + 0.5f, (float)_y + 0.5f,
(float)_x + 0.5f + (float)_width * 1.0f, (float)_y + 0.5f + (float)_height / 2.0f - 0.5f,
(float)_x + 0.5f, (float)_y + 0.5f + (float)_height - 1.0f,
};
drawPolygon(verts, 3, 1.0f, _abgr);
}
else if (TriangleOrientation::Up == _orientation)
{
const float verts[3 * 2] =
{
(float)_x + 0.5f, (float)_y + 0.5f + (float)_height - 1.0f,
(float)_x + 0.5f + (float)_width / 2.0f - 0.5f, (float)_y + 0.5f,
(float)_x + 0.5f + (float)_width - 1.0f, (float)_y + 0.5f + (float)_height - 1.0f,
};
drawPolygon(verts, 3, 1.0f, _abgr);
}
else //if (TriangleOrientation::Down == _orientation).
{
const float verts[3 * 2] =
{
(float)_x + 0.5f, (float)_y + 0.5f,
(float)_x + 0.5f + (float)_width / 2.0f - 0.5f, (float)_y + 0.5f + (float)_height - 1.0f,
(float)_x + 0.5f + (float)_width - 1.0f, (float)_y + 0.5f,
};
drawPolygon(verts, 3, 1.0f, _abgr);
}
}
#if !USE_NANOVG_FONT
void getBakedQuad(stbtt_bakedchar* _chardata, int32_t char_index, float* _xpos, float* _ypos, stbtt_aligned_quad* _quad)
{
stbtt_bakedchar* b = _chardata + char_index;
int32_t round_x = STBTT_ifloor(*_xpos + b->xoff);
int32_t round_y = STBTT_ifloor(*_ypos + b->yoff);
_quad->x0 = (float)round_x;
_quad->y0 = (float)round_y;
_quad->x1 = (float)round_x + b->x1 - b->x0;
_quad->y1 = (float)round_y + b->y1 - b->y0;
_quad->s0 = (b->x0 + m_halfTexel) * m_invTextureWidth;
_quad->t0 = (b->y0 + m_halfTexel) * m_invTextureWidth;
_quad->s1 = (b->x1 + m_halfTexel) * m_invTextureHeight;
_quad->t1 = (b->y1 + m_halfTexel) * m_invTextureHeight;
*_xpos += b->xadvance;
}
#endif // !USE_NANOVG_FONT
void drawText(int32_t _x, int32_t _y, ImguiTextAlign::Enum _align, const char* _text, uint32_t _abgr)
{
drawText( (float)_x, (float)_y, _text, _align, _abgr);
}
void drawText(float _x, float _y, const char* _text, ImguiTextAlign::Enum _align, uint32_t _abgr)
{
if (NULL == _text
|| '\0' == _text[0])
{
return;
}
#if USE_NANOVG_FONT
static uint32_t textAlign[ImguiTextAlign::Count] =
{
NVG_ALIGN_LEFT,
NVG_ALIGN_CENTER,
NVG_ALIGN_RIGHT,
};
nvgTextAlign(m_nvg, textAlign[_align]);
nvgFontBlur(m_nvg, 0.0f);
nvgFillColor(m_nvg, nvgRGBAu(_abgr) );
nvgText(m_nvg, _x, _y, _text, NULL);
#else
uint32_t numVertices = 0;
if (_align == ImguiTextAlign::Center)
{
_x -= getTextLength(m_fonts[m_currentFontIdx].m_cdata, _text, numVertices) / 2;
}
else if (_align == ImguiTextAlign::Right)
{
_x -= getTextLength(m_fonts[m_currentFontIdx].m_cdata, _text, numVertices);
}
else // just count vertices
{
getTextLength(m_fonts[m_currentFontIdx].m_cdata, _text, numVertices);
}
if (bgfx::checkAvailTransientVertexBuffer(numVertices, PosColorUvVertex::ms_decl) )
{
bgfx::TransientVertexBuffer tvb;
bgfx::allocTransientVertexBuffer(&tvb, numVertices, PosColorUvVertex::ms_decl);
PosColorUvVertex* vertex = (PosColorUvVertex*)tvb.data;
const float ox = _x;
while (*_text)
{
int32_t ch = (uint8_t)*_text;
if (ch == '\t')
{
for (int32_t i = 0; i < 4; ++i)
{
if (_x < s_tabStops[i] + ox)
{
_x = s_tabStops[i] + ox;
break;
}
}
}
else if (ch >= ' '
&& ch < 128)
{
stbtt_aligned_quad quad;
getBakedQuad(m_fonts[m_currentFontIdx].m_cdata, ch - 32, &_x, &_y, &quad);
vertex->m_x = quad.x0;
vertex->m_y = quad.y0;
vertex->m_u = quad.s0;
vertex->m_v = quad.t0;
vertex->m_abgr = _abgr;
++vertex;
vertex->m_x = quad.x1;
vertex->m_y = quad.y1;
vertex->m_u = quad.s1;
vertex->m_v = quad.t1;
vertex->m_abgr = _abgr;
++vertex;
vertex->m_x = quad.x1;
vertex->m_y = quad.y0;
vertex->m_u = quad.s1;
vertex->m_v = quad.t0;
vertex->m_abgr = _abgr;
++vertex;
vertex->m_x = quad.x0;
vertex->m_y = quad.y0;
vertex->m_u = quad.s0;
vertex->m_v = quad.t0;
vertex->m_abgr = _abgr;
++vertex;
vertex->m_x = quad.x0;
vertex->m_y = quad.y1;
vertex->m_u = quad.s0;
vertex->m_v = quad.t1;
vertex->m_abgr = _abgr;
++vertex;
vertex->m_x = quad.x1;
vertex->m_y = quad.y1;
vertex->m_u = quad.s1;
vertex->m_v = quad.t1;
vertex->m_abgr = _abgr;
++vertex;
}
++_text;
}
bgfx::setTexture(0, s_texColor, m_fonts[m_currentFontIdx].m_texture);
bgfx::setVertexBuffer(&tvb);
bgfx::setState(0
| BGFX_STATE_RGB_WRITE
| BGFX_STATE_ALPHA_WRITE
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA)
);
bgfx::setProgram(m_textureProgram);
setCurrentScissor();
bgfx::submit(m_view);
}
#endif // USE_NANOVG_FONT
}
void screenQuad(int32_t _x, int32_t _y, int32_t _width, uint32_t _height)
{
if (bgfx::checkAvailTransientVertexBuffer(6, PosUvVertex::ms_decl) )
{
bgfx::TransientVertexBuffer vb;
bgfx::allocTransientVertexBuffer(&vb, 6, PosUvVertex::ms_decl);
PosUvVertex* vertex = (PosUvVertex*)vb.data;
const float widthf = float(_width);
const float heightf = float(_height);
const float minx = float(_x);
const float miny = float(_y);
const float maxx = minx+widthf;
const float maxy = miny+heightf;
const float texelHalfW = m_halfTexel/widthf;
const float texelHalfH = m_halfTexel/heightf;
const float minu = texelHalfW;
const float maxu = 1.0f - texelHalfW;
const float minv = texelHalfH;
const float maxv = texelHalfH + 1.0f;
vertex[0].m_x = minx;
vertex[0].m_y = miny;
vertex[0].m_u = minu;
vertex[0].m_v = minv;
vertex[1].m_x = maxx;
vertex[1].m_y = miny;
vertex[1].m_u = maxu;
vertex[1].m_v = minv;
vertex[2].m_x = maxx;
vertex[2].m_y = maxy;
vertex[2].m_u = maxu;
vertex[2].m_v = maxv;
vertex[3].m_x = maxx;
vertex[3].m_y = maxy;
vertex[3].m_u = maxu;
vertex[3].m_v = maxv;
vertex[4].m_x = minx;
vertex[4].m_y = maxy;
vertex[4].m_u = minu;
vertex[4].m_v = maxv;
vertex[5].m_x = minx;
vertex[5].m_y = miny;
vertex[5].m_u = minu;
vertex[5].m_v = minv;
bgfx::setVertexBuffer(&vb);
}
}
void colorWheelWidget(float _rgb[3], bool _respectIndentation, bool _enabled)
{
const uint32_t wheelId = getId();
const uint32_t triangleId = getId();
Area& area = getCurrentArea();
const int32_t height = area.m_contentWidth - COLOR_WHEEL_PADDING;
const float heightf = float(height);
const float widthf = float(area.m_contentWidth - COLOR_WHEEL_PADDING);
const float xx = float( (_respectIndentation ? area.m_widgetX-SCROLL_AREA_PADDING : area.m_contentX) + COLOR_WHEEL_PADDING/2);
const float yy = float(area.m_widgetY);
area.m_widgetY += height + DEFAULT_SPACING;
const float ro = (widthf < heightf ? widthf : heightf) * 0.5f - 5.0f; // radiusOuter.
const float rd = 20.0f; // radiusDelta.
const float ri = ro - rd; // radiusInner.
const float aeps = 0.5f / ro; // Half a pixel arc length in radians (2pi cancels out).
const float center[2] = { xx + widthf*0.5f, yy + heightf*0.5f };
const float cmx = float(m_mx) - center[0];
const float cmy = float(m_my) - center[1];
const float aa[2] = { ri - 6.0f, 0.0f }; // Hue point.
const float bb[2] = { cosf(-120.0f/180.0f*NVG_PI) * aa[0], sinf(-120.0f/180.0f*NVG_PI) * aa[0] }; // Black point.
const float cc[2] = { cosf( 120.0f/180.0f*NVG_PI) * aa[0], sinf( 120.0f/180.0f*NVG_PI) * aa[0] }; // White point.
const float ca[2] = { aa[0] - cc[0], aa[1] - cc[1] };
const float lenCa = sqrtf(ca[0]*ca[0]+ca[1]*ca[1]);
const float invLenCa = 1.0f/lenCa;
const float dirCa[2] = { ca[0]*invLenCa, ca[1]*invLenCa };
float sel[2];
float hsv[3];
bx::rgbToHsv(hsv, _rgb);
const bool enabled = _enabled && isEnabled(m_areaId);
if (enabled)
{
if (m_leftPressed)
{
const float len = sqrtf(cmx*cmx + cmy*cmy);
if (len > ri)
{
if (len < ro)
{
setActive(wheelId);
}
}
else
{
setActive(triangleId);
}
}
if (m_leftReleased
&& (isActive(wheelId) || isActive(triangleId) ) )
{
clearActive();
}
// Set hue.
if (m_left
&& isActive(wheelId) )
{
hsv[0] = atan2f(cmy, cmx)/NVG_PI*0.5f;
if (hsv[0] < 0.0f)
{
hsv[0]+=1.0f;
}
}
}
if (enabled
&& m_left
&& isActive(triangleId) )
{
float an = -hsv[0]*NVG_PI*2.0f;
float tmx = (cmx*cosf(an)-cmy*sinf(an) );
float tmy = (cmx*sinf(an)+cmy*cosf(an) );
if (pointInTriangle(tmx, tmy, aa[0], aa[1], bb[0], bb[1], cc[0], cc[1]) )
{
sel[0] = tmx;
sel[1] = tmy;
}
else
{
closestPointOnTriangle(sel[0], sel[1], tmx, tmy, aa[0], aa[1], bb[0], bb[1], cc[0], cc[1]);
}
}
else
{
/*
* bb (black)
* /\
* / \
* / \
* / \
* / \
* / .sel \
* / \
* cc(white)/____.ss_______\aa (hue)
*/
const float ss[2] =
{
cc[0] + dirCa[0]*lenCa*hsv[1],
cc[1] + dirCa[1]*lenCa*hsv[1],
};
const float sb[2] = { bb[0]-ss[0], bb[1]-ss[1] };
const float lenSb = sqrtf(sb[0]*sb[0]+sb[1]*sb[1]);
const float invLenSb = 1.0f/lenSb;
const float dirSb[2] = { sb[0]*invLenSb, sb[1]*invLenSb };
sel[0] = cc[0] + dirCa[0]*lenCa*hsv[1] + dirSb[0]*lenSb*(1.0f - hsv[2]);
sel[1] = cc[1] + dirCa[1]*lenCa*hsv[1] + dirSb[1]*lenSb*(1.0f - hsv[2]);
}
float uu, vv, ww;
barycentric(uu, vv, ww
, aa[0], aa[1]
, bb[0], bb[1]
, cc[0], cc[1]
, sel[0], sel[1]
);
const float val = bx::fclamp(1.0f-vv, 0.0001f, 1.0f);
const float sat = bx::fclamp(uu/val, 0.0001f, 1.0f);
const float out[3] = { hsv[0], sat, val };
bx::hsvToRgb(_rgb, out);
// Draw widget.
nvgSave(m_nvg);
{
float saturation;
uint8_t alpha0;
uint8_t alpha1;
if (enabled)
{
saturation = 1.0f;
alpha0 = 255;
alpha1 = 192;
}
else
{
saturation = 0.0f;
alpha0 = 10;
alpha1 = 10;
}
// Circle.
for (uint8_t ii = 0; ii < 6; ii++)
{
const float a0 = float(ii)/6.0f * 2.0f*NVG_PI - aeps;
const float a1 = float(ii+1.0f)/6.0f * 2.0f*NVG_PI + aeps;
nvgBeginPath(m_nvg);
nvgArc(m_nvg, center[0], center[1], ri, a0, a1, NVG_CW);
nvgArc(m_nvg, center[0], center[1], ro, a1, a0, NVG_CCW);
nvgClosePath(m_nvg);
const float ax = center[0] + cosf(a0) * (ri+ro)*0.5f;
const float ay = center[1] + sinf(a0) * (ri+ro)*0.5f;
const float bx = center[0] + cosf(a1) * (ri+ro)*0.5f;
const float by = center[1] + sinf(a1) * (ri+ro)*0.5f;
NVGpaint paint = nvgLinearGradient(m_nvg
, ax, ay
, bx, by
, nvgHSLA(a0/NVG_PI*0.5f,saturation,0.55f,alpha0)
, nvgHSLA(a1/NVG_PI*0.5f,saturation,0.55f,alpha0)
);
nvgFillPaint(m_nvg, paint);
nvgFill(m_nvg);
}
// Circle stroke.
nvgBeginPath(m_nvg);
nvgCircle(m_nvg, center[0], center[1], ri-0.5f);
nvgCircle(m_nvg, center[0], center[1], ro+0.5f);
nvgStrokeColor(m_nvg, nvgRGBA(0,0,0,64) );
nvgStrokeWidth(m_nvg, 1.0f);
nvgStroke(m_nvg);
nvgSave(m_nvg);
{
// Hue selector.
nvgTranslate(m_nvg, center[0], center[1]);
nvgRotate(m_nvg, hsv[0]*NVG_PI*2.0f);
nvgStrokeWidth(m_nvg, 2.0f);
nvgBeginPath(m_nvg);
nvgRect(m_nvg, ri-1.0f,-3.0f,rd+2.0f,6.0f);
nvgStrokeColor(m_nvg, nvgRGBA(255,255,255,alpha1) );
nvgStroke(m_nvg);
// Hue selector drop shadow.
NVGpaint paint = nvgBoxGradient(m_nvg, ri-3.0f,-5.0f,ro-ri+6.0f,10.0f, 2.0f,4.0f, nvgRGBA(0,0,0,128), nvgRGBA(0,0,0,0) );
nvgBeginPath(m_nvg);
nvgRect(m_nvg, ri-2.0f-10.0f,-4.0f-10.0f,ro-ri+4.0f+20.0f,8.0f+20.0f);
nvgRect(m_nvg, ri-2.0f,-4.0f,ro-ri+4.0f,8.0f);
nvgPathWinding(m_nvg, NVG_HOLE);
nvgFillPaint(m_nvg, paint);
nvgFill(m_nvg);
// Center triangle stroke.
nvgBeginPath(m_nvg);
nvgMoveTo(m_nvg, aa[0], aa[1]);
nvgLineTo(m_nvg, bb[0], bb[1]);
nvgLineTo(m_nvg, cc[0], cc[1]);
nvgClosePath(m_nvg);
nvgStrokeColor(m_nvg, nvgRGBA(0,0,0,64) );
nvgStroke(m_nvg);
// Center triangle fill.
paint = nvgLinearGradient(m_nvg, aa[0], aa[1], bb[0], bb[1], nvgHSL(hsv[0],saturation,0.5f), nvgRGBA(0,0,0,alpha0) );
nvgFillPaint(m_nvg, paint);
nvgFill(m_nvg);
paint = nvgLinearGradient(m_nvg, (aa[0]+bb[0])*0.5f, (aa[1]+bb[1])*0.5f, cc[0], cc[1], nvgRGBA(0,0,0,0), nvgRGBA(255,255,255,alpha0) );
nvgFillPaint(m_nvg, paint);
nvgFill(m_nvg);
// Color selector.
nvgStrokeWidth(m_nvg, 2.0f);
nvgBeginPath(m_nvg);
nvgCircle(m_nvg, sel[0], sel[1], 5);
nvgStrokeColor(m_nvg, nvgRGBA(255,255,255,alpha1) );
nvgStroke(m_nvg);
// Color selector stroke.
paint = nvgRadialGradient(m_nvg, sel[0], sel[1], 7.0f, 9.0f, nvgRGBA(0,0,0,64), nvgRGBA(0,0,0,0) );
nvgBeginPath(m_nvg);
nvgRect(m_nvg, sel[0]-20.0f, sel[1]-20.0f, 40.0f, 40.0f);
nvgCircle(m_nvg, sel[0], sel[1], 7.0f);
nvgPathWinding(m_nvg, NVG_HOLE);
nvgFillPaint(m_nvg, paint);
nvgFill(m_nvg);
}
nvgRestore(m_nvg);
}
nvgRestore(m_nvg);
}
struct Area
{
int32_t m_x;
int32_t m_y;
int32_t m_width;
int32_t m_height;
int16_t m_contentX;
int16_t m_contentY;
int16_t m_contentWidth;
int16_t m_contentHeight;
int16_t m_scissorX;
int16_t m_scissorY;
int16_t m_scissorHeight;
int16_t m_scissorWidth;
int32_t m_widgetX;
int32_t m_widgetY;
int32_t m_widgetW;
int32_t* m_scrollVal;
uint16_t m_scrollId;
bool m_inside;
bool m_scissorEnabled;
};
inline Area& getCurrentArea()
{
return m_areas[m_areaId];
}
inline void setCurrentScissor()
{
const Area& area = getCurrentArea();
if (area.m_scissorEnabled)
{
bgfx::setScissor(uint16_t(IMGUI_MAX(0, area.m_scissorX) )
, uint16_t(IMGUI_MAX(0, area.m_scissorY-1) )
, area.m_scissorWidth
, area.m_scissorHeight+1
);
}
else
{
bgfx::setScissor(UINT16_MAX);
}
}
template <typename Ty, uint16_t Max=64>
struct IdStack
{
IdStack()
{
reset();
}
void reset()
{
m_current = 0;
m_idGen = 0;
m_ids[0] = 0;
}
void next()
{
BX_CHECK(Max > (m_current+1), "Param out of bounds!");
m_ids[++m_current] = ++m_idGen;
}
void previous()
{
m_current = m_current > 0 ? m_current-1 : 0;
}
Ty current() const
{
BX_CHECK(Max > (m_current), "Param out of bounds!");
return m_ids[m_current];
}
operator Ty() const
{
BX_CHECK(Max > (m_current), "Param out of bounds!");
return m_ids[m_current];
}
private:
uint16_t m_current;
Ty m_idGen;
Ty m_ids[Max];
};
int32_t m_mx;
int32_t m_my;
int32_t m_scroll;
uint32_t m_active;
uint32_t m_hot;
uint32_t m_hotToBe;
char m_char;
char m_lastChar;
uint32_t m_inputField;
int32_t m_dragX;
int32_t m_dragY;
float m_dragOrig;
bool m_left;
bool m_leftPressed;
bool m_leftReleased;
bool m_isHot;
bool m_wentActive;
bool m_insideArea;
bool m_isActivePresent;
bool m_checkActivePresence;
IdStack<uint16_t> m_areaId;
uint16_t m_widgetId;
uint64_t m_enabledAreaIds;
Area m_areas[64];
float m_tempCoords[MAX_TEMP_COORDS * 2];
float m_tempNormals[MAX_TEMP_COORDS * 2];
float m_circleVerts[NUM_CIRCLE_VERTS * 2];
uint16_t m_textureWidth;
uint16_t m_textureHeight;
float m_invTextureWidth;
float m_invTextureHeight;
float m_halfTexel;
NVGcontext* m_nvg;
uint8_t m_view;
uint16_t m_viewWidth;
uint16_t m_viewHeight;
#if !USE_NANOVG_FONT
struct Font
{
stbtt_bakedchar m_cdata[96]; // ASCII 32..126 is 95 glyphs
bgfx::TextureHandle m_texture;
float m_size;
};
uint16_t m_currentFontIdx;
bx::HandleAllocT<IMGUI_CONFIG_MAX_FONTS> m_fontHandle;
Font m_fonts[IMGUI_CONFIG_MAX_FONTS];
#endif // !USE_NANOVG_FONT
bgfx::UniformHandle u_imageLod;
bgfx::UniformHandle u_imageSwizzle;
bgfx::UniformHandle s_texColor;
bgfx::ProgramHandle m_colorProgram;
bgfx::ProgramHandle m_textureProgram;
bgfx::ProgramHandle m_imageProgram;
bgfx::ProgramHandle m_imageSwizzProgram;
bgfx::TextureHandle m_missingTexture;
};
static Imgui s_imgui;
ImguiFontHandle imguiCreate(const void* _data, float _fontSize)
{
return s_imgui.create(_data, _fontSize);
}
void imguiSetFont(ImguiFontHandle _handle)
{
s_imgui.setFont(_handle);
}
ImguiFontHandle imguiGetCurrentFont()
{
const ImguiFontHandle handle = { s_imgui.m_currentFontIdx };
return handle;
}
ImguiFontHandle imguiCreateFont(const void* _data, float _fontSize)
{
return s_imgui.createFont(_data, _fontSize);
}
void imguiDestroy()
{
s_imgui.destroy();
}
void imguiBeginFrame(int32_t _mx, int32_t _my, uint8_t _button, int32_t _scroll, uint16_t _width, uint16_t _height, char _inputChar, uint8_t _view)
{
s_imgui.beginFrame(_mx, _my, _button, _scroll, _width, _height, _inputChar, _view);
}
void imguiEndFrame()
{
s_imgui.endFrame();
}
bool imguiBorderButton(ImguiBorder::Enum _border, bool _checked, bool _enabled)
{
return s_imgui.borderButton(_border, _checked, _enabled);
}
bool imguiBeginArea(const char* _name, int _x, int _y, int _width, int _height, bool _enabled, int32_t _r)
{
return s_imgui.beginArea(_name, _x, _y, _width, _height, _enabled, _r);
}
void imguiEndArea()
{
return s_imgui.endArea();
}
bool imguiBeginScroll(int32_t _height, int32_t* _scroll, bool _enabled)
{
return s_imgui.beginScroll(_height, _scroll, _enabled);
}
void imguiEndScroll(int32_t _r)
{
s_imgui.endScroll(_r);
}
bool imguiBeginScrollArea(const char* _name, int32_t _x, int32_t _y, int32_t _width, int32_t _height, int32_t* _scroll, bool _enabled, int32_t _r)
{
const bool result = s_imgui.beginArea(_name, _x, _y, _width, _height, _enabled, _r);
const bool hasTitle = (NULL != _name && '\0' != _name[0]);
const int32_t margins = int32_t(hasTitle)*(AREA_HEADER+2*SCROLL_AREA_PADDING-1);
s_imgui.beginScroll(_height - margins, _scroll, _enabled);
return result;
}
void imguiEndScrollArea(int32_t _r)
{
s_imgui.endScroll(_r);
s_imgui.endArea();
}
void imguiIndent(uint16_t _width)
{
s_imgui.indent(_width);
}
void imguiUnindent(uint16_t _width)
{
s_imgui.unindent(_width);
}
void imguiSeparator(uint16_t _height)
{
s_imgui.separator(_height);
}
void imguiSeparatorLine(uint16_t _height)
{
s_imgui.separatorLine(_height);
}
int32_t imguiGetWidgetX()
{
return s_imgui.getCurrentArea().m_widgetX;
}
int32_t imguiGetWidgetY()
{
return s_imgui.getCurrentArea().m_widgetY;
}
bool imguiButton(const char* _text, bool _enabled, ImguiAlign::Enum _align, uint32_t _rgb0, int32_t _r)
{
return s_imgui.button(_text, _enabled, _align, _rgb0, _r);
}
bool imguiItem(const char* _text, bool _enabled)
{
return s_imgui.item(_text, _enabled);
}
bool imguiCheck(const char* _text, bool _checked, bool _enabled)
{
return s_imgui.check(_text, _checked, _enabled);
}
bool imguiCollapse(const char* _text, const char* _subtext, bool _checked, bool _enabled)
{
return s_imgui.collapse(_text, _subtext, _checked, _enabled);
}
void imguiLabel(const char* _format, ...)
{
va_list argList;
va_start(argList, _format);
s_imgui.labelVargs(_format, argList, imguiRGBA(255, 255, 255, 255) );
va_end(argList);
}
void imguiLabel(uint32_t _rgba, const char* _format, ...)
{
va_list argList;
va_start(argList, _format);
s_imgui.labelVargs(_format, argList, _rgba);
va_end(argList);
}
void imguiValue(const char* _text)
{
s_imgui.value(_text);
}
bool imguiSlider(const char* _text, float& _val, float _vmin, float _vmax, float _vinc, bool _enabled, ImguiAlign::Enum _align)
{
return s_imgui.slider(_text, _val, _vmin, _vmax, _vinc, _enabled, _align);
}
bool imguiSlider(const char* _text, int32_t& _val, int32_t _vmin, int32_t _vmax, bool _enabled, ImguiAlign::Enum _align)
{
float val = (float)_val;
bool result = s_imgui.slider(_text, val, (float)_vmin, (float)_vmax, 1.0f, _enabled, _align);
_val = (int32_t)val;
return result;
}
void imguiInput(const char* _label, char* _str, uint32_t _len, bool _enabled, ImguiAlign::Enum _align, int32_t _r)
{
s_imgui.input(_label, _str, _len, _enabled, _align, _r);
}
uint8_t imguiTabsUseMacroInstead(uint8_t _selected, ...)
{
va_list argList;
va_start(argList, _selected);
const uint8_t result = s_imgui.tabs(_selected, true, ImguiAlign::LeftIndented, BUTTON_HEIGHT, BUTTON_HEIGHT/2 - 1, argList);
va_end(argList);
return result;
}
uint8_t imguiTabsUseMacroInstead(uint8_t _selected, bool _enabled, ...)
{
va_list argList;
va_start(argList, _enabled);
const uint8_t result = s_imgui.tabs(_selected, _enabled, ImguiAlign::LeftIndented, BUTTON_HEIGHT, BUTTON_HEIGHT/2 - 1, argList);
va_end(argList);
return result;
}
uint8_t imguiTabsUseMacroInstead(uint8_t _selected, bool _enabled, ImguiAlign::Enum _align, ...)
{
va_list argList;
va_start(argList, _align);
const uint8_t result = s_imgui.tabs(_selected, _enabled, _align, BUTTON_HEIGHT, BUTTON_HEIGHT/2 - 1, argList);
va_end(argList);
return result;
}
uint8_t imguiTabsUseMacroInstead(uint8_t _selected, bool _enabled, ImguiAlign::Enum _align, int32_t _height, int32_t _r, ...)
{
va_list argList;
va_start(argList, _r);
const uint8_t result = s_imgui.tabs(_selected, _enabled, _align, _height, _r, argList);
va_end(argList);
return result;
}
uint32_t imguiChooseUseMacroInstead(uint32_t _selected, ...)
{
va_list argList;
va_start(argList, _selected);
const char* str = va_arg(argList, const char*);
for (uint32_t ii = 0; str != NULL; ++ii, str = va_arg(argList, const char*) )
{
if (imguiCheck(str, ii == _selected) )
{
_selected = ii;
}
}
va_end(argList);
return _selected;
}
void imguiDrawText(int32_t _x, int32_t _y, ImguiTextAlign::Enum _align, const char* _text, uint32_t _argb)
{
s_imgui.drawText(_x, _y, _align, _text, _argb);
}
void imguiDrawLine(float _x0, float _y0, float _x1, float _y1, float _r, uint32_t _argb)
{
s_imgui.drawLine(_x0, _y0, _x1, _y1, _r, _argb);
}
void imguiDrawRoundedRect(float _x, float _y, float _width, float _height, float _r, uint32_t _argb)
{
s_imgui.drawRoundedRect(_x, _y, _width, _height, _r, _argb);
}
void imguiDrawRect(float _x, float _y, float _width, float _height, uint32_t _argb)
{
s_imgui.drawRect(_x, _y, _width, _height, _argb);
}
void imguiBool(const char* _text, bool& _flag, bool _enabled)
{
if (imguiCheck(_text, _flag, _enabled) )
{
_flag = !_flag;
}
}
void imguiColorWheel(float _rgb[3], bool _respectIndentation, bool _enabled)
{
s_imgui.colorWheelWidget(_rgb, _respectIndentation, _enabled);
}
void imguiColorWheel(const char* _text, float _rgb[3], bool& _activated, bool _enabled)
{
char buf[128];
bx::snprintf(buf, sizeof(buf), "[RGB %-2.2f %-2.2f %-2.2f]"
, _rgb[0]
, _rgb[1]
, _rgb[2]
);
if (imguiCollapse(_text, buf, _activated, _enabled) )
{
_activated = !_activated;
}
if (_activated)
{
imguiColorWheel(_rgb, false, _enabled);
}
}
void imguiImage(bgfx::TextureHandle _image, float _lod, int32_t _width, int32_t _height, ImguiAlign::Enum _align)
{
s_imgui.image(_image, _lod, _width, _height, _align);
}
void imguiImage(bgfx::TextureHandle _image, float _lod, float _width, float _aspect, ImguiAlign::Enum _align)
{
s_imgui.image(_image, _lod, _width, _aspect, _align);
}
void imguiImageChannel(bgfx::TextureHandle _image, uint8_t _channel, float _lod, int32_t _width, int32_t _height, ImguiAlign::Enum _align)
{
s_imgui.imageChannel(_image, _channel, _lod, _width, _height, _align);
}
void imguiImageChannel(bgfx::TextureHandle _image, uint8_t _channel, float _lod, float _width, float _aspect, ImguiAlign::Enum _align)
{
s_imgui.imageChannel(_image, _channel, _lod, _width, _aspect, _align);
}
bool imguiMouseOverArea()
{
return s_imgui.m_insideArea;
}
float imguiGetTextLength(const char* _text, ImguiFontHandle _handle)
{
#if !USE_NANOVG_FONT
uint32_t numVertices = 0; //unused
return getTextLength(s_imgui.m_fonts[_handle.idx].m_cdata, _text, numVertices);
#else
return 0.0f;
#endif
}
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