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stable window resizing

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Updated frame calculation and position anchoring in WM_SIZING for
stability.
This commit is contained in:
Kevin Lin 2013-02-27 01:25:23 -08:00
parent 316053bd9b
commit dcc2bf250c
1 changed files with 27 additions and 18 deletions
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45
examples/common/entry_windows.cpp
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@ -287,15 +287,11 @@ namespace entry
case WM_SIZING: case WM_SIZING:
{ {
RECT clientRect;
GetClientRect(_hwnd, &clientRect);
uint32_t width = clientRect.right-clientRect.left;
uint32_t height = clientRect.bottom-clientRect.top;
RECT& rect = *(RECT*)_lparam; RECT& rect = *(RECT*)_lparam;
uint32_t frameWidth = rect.right-rect.left - width; uint32_t width = rect.right - rect.left - m_frameWidth;
uint32_t frameHeight = rect.bottom-rect.top - height; uint32_t height = rect.bottom - rect.top - m_frameHeight;
//Recalculate size according to aspect ratio
switch (_wparam) switch (_wparam)
{ {
case WMSZ_LEFT: case WMSZ_LEFT:
@ -309,6 +305,9 @@ namespace entry
default: default:
{ {
unsigned int oldWidth = width;
unsigned int oldHeight = height;
float aspectRatio = m_aspectRatio; float aspectRatio = m_aspectRatio;
height = bx::uint32_max(DEFAULT_HEIGHT/4, height); height = bx::uint32_max(DEFAULT_HEIGHT/4, height);
width = uint32_t(float(height)*aspectRatio); width = uint32_t(float(height)*aspectRatio);
@ -316,18 +315,22 @@ namespace entry
break; break;
} }
rect.right = rect.left + width + frameWidth; //Recalculate position using different anchor points
rect.bottom = rect.top + height + frameHeight; switch(_wparam)
{
SetWindowPos(_hwnd case WMSZ_LEFT:
, HWND_TOP case WMSZ_TOPLEFT:
, rect.left case WMSZ_BOTTOMLEFT:
, rect.top rect.left = rect.right - width - m_frameWidth;
, (rect.right-rect.left) rect.bottom = rect.top + height + m_frameHeight;
, (rect.bottom-rect.top) break;
, SWP_SHOWWINDOW
);
default:
rect.right = rect.left + width + m_frameWidth;
rect.bottom = rect.top + height + m_frameHeight;
break;
}
m_eventQueue.postSizeEvent(m_width, m_height); m_eventQueue.postSizeEvent(m_width, m_height);
} }
return 0; return 0;
@ -468,7 +471,11 @@ namespace entry
} }
SetWindowLong(m_hwnd, GWL_STYLE, style); SetWindowLong(m_hwnd, GWL_STYLE, style);
uint32_t prewidth = newrect.right - newrect.left;
uint32_t preheight = newrect.bottom - newrect.top;
AdjustWindowRect(&newrect, style, FALSE); AdjustWindowRect(&newrect, style, FALSE);
m_frameWidth = (newrect.right - newrect.left) - prewidth;
m_frameHeight = (newrect.bottom - newrect.top) - preheight;
UpdateWindow(m_hwnd); UpdateWindow(m_hwnd);
if (rect.left == -32000 if (rect.left == -32000
@ -573,6 +580,8 @@ namespace entry
uint32_t m_height; uint32_t m_height;
uint32_t m_oldWidth; uint32_t m_oldWidth;
uint32_t m_oldHeight; uint32_t m_oldHeight;
uint32_t m_frameWidth;
uint32_t m_frameHeight;
float m_aspectRatio; float m_aspectRatio;
int32_t m_mx; int32_t m_mx;