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/** \file
* \brief Windows Native Window Driver
*
* See Copyright Notice in cd.h
*/
#include <stdlib.h>
#include <stdio.h>
#include "cdwin.h"
#include "cdnative.h"
int cdGetScreenColorPlanes(void)
{
int bpp;
HDC ScreenDC = GetDC(NULL);
bpp = GetDeviceCaps(ScreenDC, BITSPIXEL);
ReleaseDC(NULL, ScreenDC);
return bpp;
}
void cdGetScreenSize(int *width, int *height, double *width_mm, double *height_mm)
{
HDC ScreenDC = GetDC(NULL);
if (width) *width = GetDeviceCaps(ScreenDC, HORZRES);
if (height) *height = GetDeviceCaps(ScreenDC, VERTRES);
if (width_mm) *width_mm = ((GetDeviceCaps(ScreenDC, HORZRES) * 25.4) / GetDeviceCaps(ScreenDC, LOGPIXELSX));
if (height_mm) *height_mm = ((GetDeviceCaps(ScreenDC, VERTRES) * 25.4) / GetDeviceCaps(ScreenDC, LOGPIXELSY));
ReleaseDC(NULL, ScreenDC);
}
static void cdwReleaseDC(cdCtxCanvas *ctxcanvas)
{
SelectObject(ctxcanvas->hDC, ctxcanvas->hOldBrush);
SelectObject(ctxcanvas->hDC, ctxcanvas->hOldPen);
SelectObject(ctxcanvas->hDC, ctxcanvas->hOldFont);
ReleaseDC(ctxcanvas->hWnd, ctxcanvas->hDC);
ctxcanvas->hDC = NULL;
}
static int cdactivate(cdCtxCanvas *ctxcanvas)
{
if (ctxcanvas->hWnd)
{
RECT rect;
GetClientRect(ctxcanvas->hWnd, &rect);
ctxcanvas->canvas->w = rect.right - rect.left;
ctxcanvas->canvas->h = rect.bottom - rect.top;
ctxcanvas->canvas->w_mm = ((double)ctxcanvas->canvas->w) / ctxcanvas->canvas->xres;
ctxcanvas->canvas->h_mm = ((double)ctxcanvas->canvas->h) / ctxcanvas->canvas->yres;
ctxcanvas->canvas->bpp = cdGetScreenColorPlanes();
}
/* Se nao e' ownwer, tem que restaurar o contexto */
if (!ctxcanvas->isOwnedDC)
{
if (ctxcanvas->hDC) /* deactivate not called */
cdwReleaseDC(ctxcanvas);
ctxcanvas->hDC = GetDC(ctxcanvas->hWnd);
cdwRestoreDC(ctxcanvas);
}
if (ctxcanvas->canvas->use_matrix)
ctxcanvas->canvas->cxTransform(ctxcanvas, ctxcanvas->canvas->matrix);
return CD_OK;
}
static void cddeactivate(cdCtxCanvas *ctxcanvas)
{
/* Se nao e' ownwer, tem que liberar o contexto */
if (!ctxcanvas->isOwnedDC && ctxcanvas->hDC)
cdwReleaseDC(ctxcanvas);
}
static void cdkillcanvas(cdCtxCanvas *ctxcanvas)
{
/* se nao e' owner e nao esta' ativo, simula ativacao */
if (!ctxcanvas->isOwnedDC && !ctxcanvas->hDC)
{
ctxcanvas->hDC = GetDC(ctxcanvas->hWnd);
cdwRestoreDC(ctxcanvas);
}
cdwKillCanvas(ctxcanvas);
if (ctxcanvas->release_dc)
ReleaseDC(ctxcanvas->hWnd, ctxcanvas->hDC);
memset(ctxcanvas, 0, sizeof(cdCtxCanvas));
free(ctxcanvas);
}
static void cdcreatecanvas(cdCanvas* canvas, void *data)
{
cdCtxCanvas* ctxcanvas;
HWND hWnd = NULL;
HDC hDC, ScreenDC;
int release_dc = 0;
ScreenDC = GetDC(NULL);
canvas->bpp = GetDeviceCaps(ScreenDC, BITSPIXEL);
canvas->xres = (float)(((double)GetDeviceCaps(ScreenDC, LOGPIXELSX)) / 25.4);
canvas->yres = (float)(((double)GetDeviceCaps(ScreenDC, LOGPIXELSY)) / 25.4);
ReleaseDC(NULL, ScreenDC);
if (!data)
{
hDC = GetDC(NULL);
release_dc = 1;
canvas->w = GetDeviceCaps(hDC, HORZRES);
canvas->h = GetDeviceCaps(hDC, VERTRES);
}
else if (IsWindow((HWND)data))
{
RECT rect;
hWnd = (HWND)data;
hDC = GetDC(hWnd);
release_dc = 1;
GetClientRect(hWnd, &rect);
canvas->w = rect.right - rect.left;
canvas->h = rect.bottom - rect.top;
}
else /* can be a HDC or a string */
{
DWORD objtype = GetObjectType((HGDIOBJ)data);
if (objtype == OBJ_DC || objtype == OBJ_MEMDC ||
objtype == OBJ_ENHMETADC || objtype == OBJ_METADC)
{
hDC = (HDC)data;
canvas->w = GetDeviceCaps(hDC, HORZRES);
canvas->h = GetDeviceCaps(hDC, VERTRES);
}
else
{
hDC = NULL;
canvas->w = 0;
canvas->h = 0;
sscanf((char*)data,"%p %dx%d", &hDC, &canvas->w, &canvas->h);
if (!hDC || !canvas->w || !canvas->h)
return;
}
release_dc = 0;
}
canvas->w_mm = ((double)canvas->w) / canvas->xres;
canvas->h_mm = ((double)canvas->h) / canvas->yres;
/* Inicializa driver WIN32 */
ctxcanvas = cdwCreateCanvas(canvas, hWnd, hDC, CDW_WIN);
ctxcanvas->release_dc = release_dc;
ctxcanvas->clip_pnt[2].x = ctxcanvas->clip_pnt[1].x = canvas->w - 1;
ctxcanvas->clip_pnt[3].y = ctxcanvas->clip_pnt[2].y = canvas->h - 1;
if (hWnd)
{
LONG style = GetClassLong(hWnd, GCL_STYLE);
ctxcanvas->isOwnedDC = (int) ((style & CS_OWNDC) || (style & CS_CLASSDC));
}
else
ctxcanvas->isOwnedDC = 1;
/* Se nao e' ownwer, tem que liberar o contexto */
if (!ctxcanvas->isOwnedDC)
cdwReleaseDC(ctxcanvas);
}
static void cdinittable(cdCanvas* canvas)
{
cdwInitTable(canvas);
canvas->cxKillCanvas = cdkillcanvas;
canvas->cxActivate = cdactivate;
canvas->cxDeactivate = cddeactivate;
}
static cdContext cdNativeContext =
{
CD_CAP_ALL & ~(CD_CAP_PLAY | CD_CAP_YAXIS | CD_CAP_FPRIMTIVES ),
0,
cdcreatecanvas,
cdinittable,
NULL,
NULL,
};
cdContext* cdContextNativeWindow(void)
{
if (cdUseContextPlus(CD_QUERY))
{
cdContext* ctx = cdGetContextPlus(CD_CTX_NATIVEWINDOW);
if (ctx != NULL)
return ctx;
}
return &cdNativeContext;
}
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