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https://github.com/ultimatepp/ultimatepp.git
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109 lines
2.3 KiB
C++
109 lines
2.3 KiB
C++
#include "GLCtrl.h"
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namespace Upp {
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#ifdef PLATFORM_WIN32
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#pragma comment( lib, "opengl32.lib" ) // Search For OpenGL32.lib While Linking
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#pragma comment( lib, "glu32.lib" ) // Search For GLu32.lib While Linking
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void GLCtrl::GLPane::Init()
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{
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HWND hwnd = GetHWND();
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if(!hwnd)
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return;
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hDC = ::GetDC(hwnd);
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if(!hDC)
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return;
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PIXELFORMATDESCRIPTOR pfd;
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memset(&pfd, 0, sizeof(pfd));
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pfd.nSize = sizeof(pfd);
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pfd.nVersion = 1;
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pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_GENERIC_ACCELERATED | PFD_GENERIC_FORMAT;
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if (ctrl->doubleBuffering) pfd.dwFlags |= PFD_DOUBLEBUFFER;
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pfd.iPixelType = PFD_TYPE_RGBA;
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pfd.cColorBits = 32;
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pfd.cDepthBits = ctrl->depthSize;
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pfd.cStencilBits = ctrl->stencilSize;
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pfd.iLayerType = PFD_MAIN_PLANE;
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int pf = ChoosePixelFormat(hDC, &pfd);
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if(!pf) {
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Destroy();
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return;
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}
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if(!SetPixelFormat(hDC, pf, &pfd)) {
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Destroy();
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return;
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}
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DescribePixelFormat(hDC, pf, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
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hRC = wglCreateContext(hDC);
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if (!hRC)
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return;
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ActivateContext();
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ctrl->GLInit();
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ctrl->GLResize(GetSize().cx, GetSize().cy);
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ctrl->GLPaint();
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}
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void GLCtrl::GLPane::Destroy()
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{
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if (hDC != NULL && hRC != NULL)
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{
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ActivateContext();
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ctrl->GLDone();
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wglMakeCurrent(NULL, NULL);
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}
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if(hRC)
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wglDeleteContext(hRC);
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if(hDC)
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ReleaseDC(GetHWND(), hDC);
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}
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void GLCtrl::GLPane::ActivateContext()
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{
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if (hRC != NULL && wglGetCurrentContext() != hRC)
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wglMakeCurrent(hDC, hRC);
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}
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void GLCtrl::GLPane::State(int reason)
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{
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if (reason == CLOSE)
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Destroy();
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if ((reason == LAYOUTPOS || reason == POSITION) && hDC != NULL && hRC != NULL)
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{
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ActivateContext();
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ctrl->GLResize(GetSize().cx, GetSize().cy);
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}
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DHCtrl::State(reason);
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if (reason == OPEN)
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Init();
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}
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LRESULT GLCtrl::GLPane::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
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{
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if((message == WM_PAINT || message == WM_SIZE || message == WM_ERASEBKGND) && hDC && hRC)
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{
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PAINTSTRUCT ps;
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BeginPaint(GetHWND(), &ps);
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ActivateContext();
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ctrl->GLPaint();
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if(ctrl->doubleBuffering)
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SwapBuffers(hDC);
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else
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glFlush();
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EndPaint(GetHWND(), &ps);
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return 0;
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}
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return DHCtrl::WindowProc(message, wParam, lParam);
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}
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#endif
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}
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