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annotate src/video/bwindow/SDL_BView.h @ 2866:e532417a6977

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Fixed SDL 1.2 compatibility problem. The API specifies that SDL_OpenAudio() will fill out the 'desired' audio spec with the correct samples and size set by the driver. This value is important since it may be used by applications that size audio buffers, etc. However, we want to allow advanced applications to call SDL_OpenAudioDevice() which gets passed a const 'desired' parameter, and have the correct data filled into the 'obtained' parameter, possibly allowing or not allowing format changes. So... 'obtained' becomes the audio format the user callback is expected to use, and we add flags to allow the application to specify which format changes are allowed. Note: We really need to add a way to query the 'obtained' audio spec.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 13 Dec 2008 06:36:47 +0000
parents 99210400e8b9
children f7b03b6838cb
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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: */