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 (data == NULL) {
  52                 SetPixelWidth (0.0);
  53                 SetPixelHeight (0.0);
  54         }
  55
  56         if (this->data && this->own_data)
  57                 g_free (this->data);
  58         this->own_data = own_data;
  59         this->data = data;
  60 }
  61
  62 void
  63 BitmapSource::Invalidate ()
  64 {
  65         if (GetPixelWidth () == 0 || GetPixelHeight () == 0)
  66                 return;
  67
  68         if (native_surface) {
  69                 cairo_surface_destroy (native_surface);
  70                 native_surface = NULL;
  71         }
  72         if (image_surface)
  73                 cairo_surface_destroy (image_surface);
  74
  75         image_surface = cairo_image_surface_create_for_data ((unsigned char *) GetBitmapData (), GetPixelFormat () == PixelFormatBgr32 ? CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32, GetPixelWidth (), GetPixelHeight (), GetPixelWidth ()*4);
  76
  77         Emit (BitmapSource::PixelDataChangedEvent);
  78 }
  79
  80 cairo_surface_t *
  81 BitmapSource::GetSurface (cairo_t *cr)
  82 {
  83         if (image_surface == NULL)
  84                 return NULL;
  85
  86         if (native_surface)
  87                 return native_surface;
  88
  89         if (cr == NULL)
  90                 return image_surface;
  91
  92         native_surface = cairo_surface_create_similar (cairo_get_group_target (cr),
  93                                                        cairo_surface_get_content (image_surface),
  94                                                        GetPixelWidth (), GetPixelHeight ());
  95
  96         cairo_t *context = cairo_create (native_surface);
  97
  98         cairo_set_source_surface (context, image_surface, 0, 0);
  99         cairo_pattern_set_filter (cairo_get_source (context), CAIRO_FILTER_FAST);
 100
 101         cairo_paint (context);
 102         cairo_destroy (context);
 103
 104         return native_surface;
 105 }