src/bitmapsource.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * bitmapsource.cpp
   4  *
   5  * Contact:
   6  *   Moonlight List (moonlight-list@lists.ximian.com)
   7  *
   8  * Copyright 2007-2008 Novell, Inc. (http://www.novell.com)
   9  *
  10  * See the LICENSE file included with the distribution for details.
  11  *
  12  */
  13
  14 #include <config.h>
  15
  16 #include <stdio.h>
  17
  18 #include "application.h"
  19 #include "bitmapsource.h"
  20 #include "runtime.h"
  21
  22 BitmapSource::BitmapSource ()
  23 {
  24         SetObjectType (Type::BITMAPSOURCE);
  25         image_surface = NULL;
  26         native_surface = NULL;
  27         data = NULL;
  28         own_data = true;
  29 }
  30
  31 BitmapSource::~BitmapSource ()
  32 {
  33         if (image_surface)
  34                 cairo_surface_destroy (image_surface);
  35         if (native_surface)
  36                 cairo_surface_destroy (native_surface);
  37
  38         if (data && own_data)
  39                 g_free (data);
  40 }
  41
  42 gpointer
  43 BitmapSource::GetBitmapData ()
  44 {
  45         return data;
  46 }
  47
  48 void
  49 BitmapSource::SetBitmapData (gpointer data, bool own_data)
  50 {
  51         if (this->data && this->own_data)
  52                 g_free (this->data);
  53         this->own_data = own_data;
  54         this->data = data;
  55 }
  56
  57 void
  58 BitmapSource::Invalidate ()
  59 {
  60         if (GetPixelWidth () == 0 || GetPixelHeight () == 0)
  61                 return;
  62
  63         if (native_surface) {
  64                 cairo_surface_destroy (native_surface);
  65                 native_surface = NULL;
  66         }
  67         if (image_surface)
  68                 cairo_surface_destroy (image_surface);
  69
  70         image_surface = cairo_image_surface_create_for_data ((unsigned char *) GetBitmapData (), GetPixelFormat () == PixelFormatBgr32 ? CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32, GetPixelWidth (), GetPixelHeight (), GetPixelWidth ()*4);
  71
  72         Emit (BitmapSource::PixelDataChangedEvent);
  73 }
  74
  75 cairo_surface_t *
  76 BitmapSource::GetSurface (cairo_t *cr)
  77 {
  78         if (image_surface == NULL)
  79                 return NULL;
  80
  81         if (native_surface)
  82                 return native_surface;
  83
  84         if (cr == NULL)
  85                 return image_surface;
  86
  87         native_surface = cairo_surface_create_similar (cairo_get_group_target (cr),
  88                                                        cairo_surface_get_content (image_surface),
  89                                                        GetPixelWidth (), GetPixelHeight ());
  90
  91         cairo_t *context = cairo_create (native_surface);
  92
  93         cairo_set_source_surface (context, image_surface, 0, 0);
  94         cairo_pattern_set_filter (cairo_get_source (context), CAIRO_FILTER_FAST);
  95
  96         cairo_paint (context);
  97         cairo_destroy (context);
  98
  99         return native_surface;
 100 }