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annotate src/video/bwindow/SDL_BView.h @ 5143:e743b9c3f6d6

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Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers.
author Sam Lantinga <slouken@libsdl.org>
date Mon, 31 Jan 2011 23:23:57 -0800
parents f7b03b6838cb
children b530ef003506
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #ifndef _SDL_BView_h
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25 #define _SDL_BView_h
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26
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27 /* This is the event handling and graphics update portion of SDL_BWin */
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28
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29 extern "C"
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30 {
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31 #include "../../events/SDL_events_c.h"
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32 };
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33
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34 class SDL_BView:public BView
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35 {
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36 public:
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37 SDL_BView(BRect frame):BView(frame, "SDL View", B_FOLLOW_ALL_SIDES,
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38 (B_WILL_DRAW | B_FRAME_EVENTS))
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39 {
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40 image = NULL;
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41 xoff = yoff = 0;
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42 SetViewColor(0, 0, 0, 0);
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43 SetHighColor(0, 0, 0, 0);
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44 }
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45 virtual ~ SDL_BView()
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46 {
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47 SetBitmap(NULL);
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48 }
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49 /* Set drawing offsets for fullscreen mode */
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50 virtual void SetXYOffset(int x, int y)
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51 {
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52 xoff = x;
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53 yoff = y;
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54 }
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55 virtual void GetXYOffset(int &x, int &y)
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56 {
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57 x = xoff;
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58 y = yoff;
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59 }
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60 /* The view changed size. If it means we're in fullscreen, we
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61 * draw a nice black box in the entire view to get black borders.
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62 */
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63 virtual void FrameResized(float width, float height)
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64 {
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65 BRect bounds;
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66 bounds.top = bounds.left = 0;
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67 bounds.right = width;
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68 bounds.bottom = height;
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69 /* Fill the entire view with black */
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70 FillRect(bounds, B_SOLID_HIGH);
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71 /* And if there's an image, redraw it. */
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72 if (image) {
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73 bounds = image->Bounds();
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74 Draw(bounds);
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75 }
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76 }
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77
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78 /* Drawing portion of this complete breakfast. :) */
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79 virtual void SetBitmap(BBitmap * bitmap)
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80 {
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81 if (image) {
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82 delete image;
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83 }
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84 image = bitmap;
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85 }
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86 virtual void Draw(BRect updateRect)
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87 {
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88 if (image) {
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89 if (xoff || yoff) {
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90 BRect dest;
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91 dest.top = updateRect.top + yoff;
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92 dest.left = updateRect.left + xoff;
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93 dest.bottom = updateRect.bottom + yoff;
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94 dest.right = updateRect.right + xoff;
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95 DrawBitmap(image, updateRect, dest);
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96 } else {
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97 DrawBitmap(image, updateRect, updateRect);
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98 }
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99 }
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100 }
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101 virtual void DrawAsync(BRect updateRect)
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102 {
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103 if (xoff || yoff) {
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104 BRect dest;
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105 dest.top = updateRect.top + yoff;
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106 dest.left = updateRect.left + xoff;
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107 dest.bottom = updateRect.bottom + yoff;
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108 dest.right = updateRect.right + xoff;;
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109 DrawBitmapAsync(image, updateRect, dest);
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110 } else {
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111 DrawBitmapAsync(image, updateRect, updateRect);
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112 }
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113 }
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114
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115 private:
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116 BBitmap * image;
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117 int xoff, yoff;
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118 };
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119
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120 #endif /* _SDL_BView_h */
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121 /* vi: set ts=4 sw=4 expandtab: */