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Added create/set font for imgui.

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This commit is contained in:
Dario Manesku 2014-07-12 11:25:41 +01:00
parent ba8bdc572b
commit 81c3875b9a
2 changed files with 80 additions and 28 deletions
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101
examples/common/imgui/imgui.cpp
View file

@ -27,6 +27,7 @@
#include <bx/string.h>
#include <bx/uint32_t.h>
#include <bx/fpumath.h>
#include <bx/handlealloc.h>
#include <bgfx.h>
#include "../entry/dbg.h"
@ -43,6 +44,8 @@
#define USE_NANOVG_FONT 0
#define IMGUI_CONFIG_MAX_FONTS 20
#define MAX_TEMP_COORDS 100
#define NUM_CIRCLE_VERTS (8 * 4)
@ -296,15 +299,13 @@ struct Imgui
, m_halfTexel(0.0f)
, m_nvg(NULL)
, m_view(31)
, m_currentFontIdx(0)
{
m_invTextureWidth = 1.0f/m_textureWidth;
m_invTextureHeight = 1.0f/m_textureHeight;
u_imageLod.idx = bgfx::invalidHandle;
u_texColor.idx = bgfx::invalidHandle;
#if !USE_NANOVG_FONT
m_fontTexture.idx = bgfx::invalidHandle;
#endif // !USE_NANOVG_FONT
m_missingTexture.idx = bgfx::invalidHandle;
m_colorProgram.idx = bgfx::invalidHandle;
@ -312,11 +313,32 @@ struct Imgui
m_imageProgram.idx = bgfx::invalidHandle;
}
bool create(const void* _data)
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);
#else
const ImguiFontHandle handle = { bgfx::invalidHandle };
#endif // !USE_NANOVG_FONT
return handle;
}
void setFont(ImguiFontHandle _handle)
{
if (isValid(_handle) )
{
m_currentFontIdx = _handle.idx;
}
}
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, 15.0f);
nvgFontSize(m_nvg, _fontSize);
nvgFontFace(m_nvg, "default");
for (int32_t ii = 0; ii < NUM_CIRCLE_VERTS; ++ii)
@ -392,15 +414,16 @@ struct Imgui
bgfx::destroyShader(vsh);
bgfx::destroyShader(fsh);
#if !USE_NANOVG_FONT
const bgfx::Memory* mem = bgfx::alloc(m_textureWidth * m_textureHeight);
stbtt_BakeFontBitmap( (uint8_t*)_data, 0, 15.0f, mem->data, m_textureWidth, m_textureHeight, 32, 96, m_cdata);
m_fontTexture = bgfx::createTexture2D(m_textureWidth, m_textureHeight, 1, bgfx::TextureFormat::R8, BGFX_TEXTURE_NONE, mem);
#endif // !USE_NANOVG_FONT
mem = bgfx::makeRef(s_xTexture, sizeof(s_xTexture));
m_missingTexture = bgfx::createTexture(mem);
const bgfx::Memory* texMem = bgfx::makeRef(s_xTexture, sizeof(s_xTexture));
m_missingTexture = bgfx::createTexture(texMem);
return true;
#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()
@ -408,7 +431,13 @@ struct Imgui
bgfx::destroyUniform(u_imageLod);
bgfx::destroyUniform(u_texColor);
#if !USE_NANOVG_FONT
bgfx::destroyTexture(m_fontTexture);
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);
@ -1499,15 +1528,15 @@ struct Imgui
uint32_t numVertices = 0;
if (_align == ImguiTextAlign::Center)
{
_x -= getTextLength(m_cdata, _text, numVertices) / 2;
_x -= getTextLength(m_fonts[m_currentFontIdx].m_cdata, _text, numVertices) / 2;
}
else if (_align == ImguiTextAlign::Right)
{
_x -= getTextLength(m_cdata, _text, numVertices);
_x -= getTextLength(m_fonts[m_currentFontIdx].m_cdata, _text, numVertices);
}
else // just count vertices
{
getTextLength(m_cdata, _text, numVertices);
getTextLength(m_fonts[m_currentFontIdx].m_cdata, _text, numVertices);
}
if (bgfx::checkAvailTransientVertexBuffer(numVertices, PosColorUvVertex::ms_decl) )
@ -1537,7 +1566,7 @@ struct Imgui
&& ch < 128)
{
stbtt_aligned_quad quad;
getBakedQuad(m_cdata, ch - 32, &_x, &_y, &quad);
getBakedQuad(m_fonts[m_currentFontIdx].m_cdata, ch - 32, &_x, &_y, &quad);
vertex->m_x = quad.x0;
vertex->m_y = quad.y0;
@ -1585,7 +1614,7 @@ struct Imgui
++_text;
}
bgfx::setTexture(0, u_texColor, m_fontTexture);
bgfx::setTexture(0, u_texColor, m_fonts[m_currentFontIdx].m_texture);
bgfx::setVertexBuffer(&tvb);
bgfx::setState(0
| BGFX_STATE_RGB_WRITE
@ -1953,24 +1982,42 @@ struct Imgui
NVGcontext* m_nvg;
uint8_t m_view;
#if !USE_NANOVG_FONT
struct Font
{
stbtt_bakedchar m_cdata[96]; // ASCII 32..126 is 95 glyphs
bgfx::TextureHandle m_texture;
};
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_texColor;
bgfx::ProgramHandle m_colorProgram;
bgfx::ProgramHandle m_textureProgram;
bgfx::ProgramHandle m_imageProgram;
#if !USE_NANOVG_FONT
stbtt_bakedchar m_cdata[96]; // ASCII 32..126 is 95 glyphs
bgfx::TextureHandle m_fontTexture;
#endif // !USE_NANOVG_FONT
bgfx::TextureHandle m_missingTexture;
};
static Imgui s_imgui;
bool imguiCreate(const void* _data)
ImguiFontHandle imguiCreate(const void* _data, float _fontSize)
{
return s_imgui.create(_data);
return s_imgui.create(_data, _fontSize);
}
void imguiSetFont(ImguiFontHandle _handle)
{
s_imgui.setFont(_handle);
}
ImguiFontHandle imguiCreateFont(const void* _data, float _fontSize)
{
return s_imgui.createFont(_data, _fontSize);
}
void imguiDestroy()
@ -1995,7 +2042,7 @@ bool imguiBeginScrollArea(const char* _name, int32_t _x, int32_t _y, int32_t _wi
void imguiEndScrollArea()
{
return s_imgui.endScrollArea();
s_imgui.endScrollArea();
}
void imguiIndent()

7
examples/common/imgui/imgui.h
View file

@ -63,7 +63,12 @@ inline uint32_t imguiRGBA(uint8_t _r, uint8_t _g, uint8_t _b, uint8_t _a = 255)
;
}
bool imguiCreate(const void* _data);
BGFX_HANDLE(ImguiFontHandle);
ImguiFontHandle imguiCreateFont(const void* _data, float _fontSize=15.0f);
void imguiSetFont(ImguiFontHandle _handle);
ImguiFontHandle imguiCreate(const void* _data, float _fontSize=15.0f);
void imguiDestroy();
void imguiBeginFrame(int32_t _mx, int32_t _my, uint8_t _button, int32_t _scroll, uint16_t _width, uint16_t _height, uint8_t _view = 31);