gfx/thebes/src/gfxQtNativeRenderer.cpp

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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  15  * The Original Code is Novell code.
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  17  * The Initial Developer of the Original Code is Novell.
  18  * Portions created by the Initial Developer are Copyright (C) 2006
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  22  *   romaxa@gmail.com
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  37
  38 #include "gfxQtNativeRenderer.h"
  39 #include "gfxContext.h"
  40
  41 #include "gfxQtPlatform.h"
  42
  43 #include "cairo.h"
  44 #include <QWidget>
  45
  46 typedef struct {
  47     gfxQtNativeRenderer* mRenderer;
  48     nsresult               mRV;
  49 } NativeRenderingClosure;
  50
  51
  52 static cairo_bool_t
  53 NativeRendering(void *closure,
  54                 QWidget * drawable,
  55                 short offset_x, short offset_y,
  56                 QRect * rectangles, unsigned int num_rects)
  57 {
  58     NativeRenderingClosure* cl = (NativeRenderingClosure*)closure;
  59     nsresult rv = cl->mRenderer->
  60         NativeDraw(drawable, offset_x, offset_y,
  61                    rectangles, num_rects);
  62     cl->mRV = rv;
  63     return NS_SUCCEEDED(rv);
  64 }
  65
  66
  67 nsresult
  68 gfxQtNativeRenderer::Draw(gfxContext* ctx, int width, int height,
  69                           PRUint32 flags, DrawOutput* output)
  70 {
  71     NativeRenderingClosure closure = { this, NS_OK };
  72
  73     if (output) {
  74         output->mSurface = NULL;
  75         output->mUniformAlpha = PR_FALSE;
  76         output->mUniformColor = PR_FALSE;
  77     }
  78
  79 #if 0 // FIXME
  80
  81     cairo_gdk_drawing_result_t result;
  82     // Make sure result.surface is null to start with; we rely on it
  83     // being non-null meaning that a surface actually got allocated.
  84     result.surface = NULL;
  85
  86     int cairoFlags = 0;
  87     if (flags & DRAW_SUPPORTS_OFFSET) {
  88         cairoFlags |= CAIRO_GDK_DRAWING_SUPPORTS_OFFSET;
  89     }
  90     if (flags & DRAW_SUPPORTS_CLIP_RECT) {
  91         cairoFlags |= CAIRO_GDK_DRAWING_SUPPORTS_CLIP_RECT;
  92     }
  93     if (flags & DRAW_SUPPORTS_CLIP_LIST) {
  94         cairoFlags |= CAIRO_GDK_DRAWING_SUPPORTS_CLIP_LIST;
  95     }
  96     if (flags & DRAW_SUPPORTS_ALTERNATE_SCREEN) {
  97         cairoFlags |= CAIRO_GDK_DRAWING_SUPPORTS_ALTERNATE_SCREEN;
  98     }
  99     if (flags & DRAW_SUPPORTS_NONDEFAULT_VISUAL) {
 100         cairoFlags |= CAIRO_GDK_DRAWING_SUPPORTS_NONDEFAULT_VISUAL;
 101     }
 102
 103     cairo_draw_with_gdk(ctx->GetCairo(),
 104                         gfxPlatformGtk::GetPlatform()->GetGdkDrawable(ctx->OriginalSurface()),
 105                         NativeRendering,
 106                         &closure, width, height,
 107                         (flags & DRAW_IS_OPAQUE) ? CAIRO_GDK_DRAWING_OPAQUE : CAIRO_GDK_DRAWING_TRANSPARENT,
 108                         (cairo_gdk_drawing_support_t)cairoFlags,
 109                         output ? &result : NULL);
 110
 111     if (NS_FAILED(closure.mRV)) {
 112         if (result.surface) {
 113             NS_ASSERTION(output, "How did that happen?");
 114             cairo_surface_destroy (result.surface);
 115         }
 116         return closure.mRV;
 117     }
 118
 119     if (output) {
 120         if (result.surface) {
 121             output->mSurface = gfxASurface::Wrap(result.surface);
 122             if (!output->mSurface) {
 123                 cairo_surface_destroy (result.surface);
 124                 return NS_ERROR_OUT_OF_MEMORY;
 125             }
 126         }
 127
 128         output->mUniformAlpha = result.uniform_alpha;
 129         output->mUniformColor = result.uniform_color;
 130         output->mColor = gfxRGBA(result.r, result.g, result.b, result.alpha);
 131     }
 132 #endif
 133
 134     return NS_OK;
 135 }