diff options
Diffstat (limited to 'src/win32/cdwdbuf.c')
| -rw-r--r-- | src/win32/cdwdbuf.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/win32/cdwdbuf.c b/src/win32/cdwdbuf.c new file mode 100644 index 0000000..035e29e --- /dev/null +++ b/src/win32/cdwdbuf.c @@ -0,0 +1,169 @@ +/** \file + * \brief Windows Double Buffer + * + * See Copyright Notice in cd.h + */ + +#include <stdlib.h> +#include <stdio.h> + +#include "cdwin.h" +#include "cddbuf.h" + + +static void cdkillcanvas(cdCtxCanvas *ctxcanvas) +{ + cdKillImage(ctxcanvas->image_dbuffer); + cdwKillCanvas(ctxcanvas); + + memset(ctxcanvas, 0, sizeof(cdCtxCanvas)); + free(ctxcanvas); +} + +static void cddeactivate(cdCtxCanvas* ctxcanvas) +{ + cdCanvas* canvas_dbuffer = ctxcanvas->canvas_dbuffer; + /* this is done in the canvas_dbuffer context */ + cdCanvasDeactivate(canvas_dbuffer); +} + +static void cdflush(cdCtxCanvas *ctxcanvas) +{ + int old_writemode; + cdImage* image_dbuffer = ctxcanvas->image_dbuffer; + cdCanvas* canvas_dbuffer = ctxcanvas->canvas_dbuffer; + + GdiFlush(); + + /* this is done in the canvas_dbuffer context */ + /* Flush can be affected by Origin and Clipping, but not WriteMode */ + old_writemode = cdCanvasWriteMode(canvas_dbuffer, CD_REPLACE); + cdCanvasPutImageRect(canvas_dbuffer, image_dbuffer, 0, 0, 0, 0, 0, 0); + cdCanvasWriteMode(canvas_dbuffer, old_writemode); +} + +static void cdcreatecanvas(cdCanvas* canvas, cdCanvas* canvas_dbuffer) +{ + cdCtxCanvas* ctxcanvas; + cdImage* image_dbuffer; + cdCtxImage* ctximage; + + /* this is done in the canvas_dbuffer context */ + image_dbuffer = cdCanvasCreateImage(canvas_dbuffer, canvas_dbuffer->w, canvas_dbuffer->h); + if (!image_dbuffer) + return; + + ctximage = image_dbuffer->ctximage; + + /* Inicializa driver DBuffer */ + ctxcanvas = cdwCreateCanvas(canvas, NULL, ctximage->hDC, CDW_BMP); + + ctxcanvas->image_dbuffer = image_dbuffer; + ctxcanvas->canvas_dbuffer = canvas_dbuffer; + + canvas->w = ctximage->w; + canvas->h = ctximage->h; + canvas->w_mm = ctximage->w_mm; + canvas->h_mm = ctximage->h_mm; + canvas->bpp = ctximage->bpp; + canvas->xres = ctximage->xres; + canvas->yres = ctximage->yres; + ctxcanvas->clip_pnt[2].x = ctxcanvas->clip_pnt[1].x = ctximage->w - 1; + ctxcanvas->clip_pnt[3].y = ctxcanvas->clip_pnt[2].y = ctximage->h - 1; +} + +static int cdactivate(cdCtxCanvas *ctxcanvas) +{ + cdCanvas* canvas_dbuffer = ctxcanvas->canvas_dbuffer; + + /* this is done in the canvas_dbuffer context */ + /* this will update canvas size */ + cdCanvasActivate(canvas_dbuffer); + + /* check if the size changed */ + if (canvas_dbuffer->w != ctxcanvas->image_dbuffer->w || + canvas_dbuffer->h != ctxcanvas->image_dbuffer->h) + { + cdCanvas* canvas = ctxcanvas->canvas; + /* save the current, if the rebuild fail */ + cdImage* old_image_dbuffer = ctxcanvas->image_dbuffer; + cdCtxCanvas* old_ctxcanvas = ctxcanvas; + + /* if the image is rebuild, the canvas that uses the image must be also rebuild */ + + /* rebuild the image and the canvas */ + canvas->ctxcanvas = NULL; + cdcreatecanvas(canvas, canvas_dbuffer); + if (!canvas->ctxcanvas) + { + canvas->ctxcanvas = old_ctxcanvas; + return CD_ERROR; + } + + /* remove the old image and canvas */ + cdKillImage(old_image_dbuffer); + cdwKillCanvas(old_ctxcanvas); + free(old_ctxcanvas); + + ctxcanvas = canvas->ctxcanvas; + + /* update canvas attributes */ + canvas->cxBackground(ctxcanvas, canvas->background); + canvas->cxForeground(ctxcanvas, canvas->foreground); + canvas->cxBackOpacity(ctxcanvas, canvas->back_opacity); + canvas->cxWriteMode(ctxcanvas, canvas->write_mode); + canvas->cxLineStyle(ctxcanvas, canvas->line_style); + canvas->cxLineWidth(ctxcanvas, canvas->line_width); + canvas->cxLineCap(ctxcanvas, canvas->line_cap); + canvas->cxLineJoin(ctxcanvas, canvas->line_join); + canvas->cxHatch(ctxcanvas, canvas->hatch_style); + if (canvas->stipple) canvas->cxStipple(ctxcanvas, canvas->stipple_w, canvas->stipple_h, canvas->stipple); + if (canvas->pattern) canvas->cxPattern(ctxcanvas, canvas->pattern_w, canvas->pattern_h, canvas->pattern); + canvas->cxInteriorStyle(ctxcanvas, canvas->interior_style); + if (canvas->native_font[0] == 0) canvas->cxFont(ctxcanvas, canvas->font_type_face, canvas->font_style, canvas->font_size); + else canvas->cxNativeFont(ctxcanvas, canvas->native_font); + canvas->cxTextAlignment(ctxcanvas, canvas->text_alignment); + canvas->cxTextOrientation(ctxcanvas, canvas->text_orientation); + if (canvas->use_matrix && canvas->cxTransform) canvas->cxTransform(ctxcanvas, canvas->matrix); + if (canvas->clip_mode == CD_CLIPAREA && canvas->cxClipArea) canvas->cxClipArea(ctxcanvas, canvas->clip_rect.xmin, canvas->clip_rect.xmax, canvas->clip_rect.ymin, canvas->clip_rect.ymax); +/* if (canvas->clip_mode == CD_CLIPAREA && canvas->cxFClipArea) canvas->cxFClipArea(ctxcanvas, canvas->clip_frect.xmin, canvas->clip_frect.xmax, canvas->clip_frect.ymin, canvas->clip_frect.ymax); */ + if (canvas->clip_mode == CD_CLIPPOLYGON && canvas->clip_poly) canvas->cxPoly(ctxcanvas, CD_CLIP, canvas->clip_poly, canvas->clip_poly_n); +/* if (canvas->clip_mode == CD_CLIPPOLYGON && canvas->clip_fpoly) canvas->cxFPoly(ctxcanvas, CD_CLIP, canvas->clip_fpoly, canvas->clip_poly_n); */ + if (canvas->clip_mode != CD_CLIPOFF) canvas->cxClip(ctxcanvas, canvas->clip_mode); + } + + return CD_OK; +} + +static void cdinittable(cdCanvas* canvas) +{ + cdwInitTable(canvas); + + canvas->cxActivate = cdactivate; + canvas->cxDeactivate = cddeactivate; + canvas->cxFlush = cdflush; + canvas->cxKillCanvas = cdkillcanvas; +} + +static cdContext cdDBufferContext = +{ + CD_CAP_ALL & ~(CD_CAP_PLAY | CD_CAP_YAXIS | + CD_CAP_FPRIMTIVES ), + 0, + cdcreatecanvas, + cdinittable, + NULL, + NULL, +}; + +cdContext* cdContextDBuffer(void) +{ + if (cdUseContextPlus(CD_QUERY)) + { + cdContext* ctx = cdGetContextPlus(CD_CTX_DBUFFER); + if (ctx != NULL) + return ctx; + } + + return &cdDBufferContext; +} |