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annotate src/video/gapi/SDL_gapivideo.h @ 4249:429c8dd3175d SDL-1.2

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Fixed bug #713 Don't clamp the mouse coordinates to the video surface size, instead clamp them to the last known window size. This allows users to get the correct mouse coordinates even if they don't call SDL_SetVideoMode() in response to an SDL_VIDEORESIZE event (used as a hack to retain the OpenGL context on Windows and Linux after a window resize)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 27 Sep 2009 05:18:43 +0000
parents 3b7fc3416601
children 9ea4413f0a9e
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_gapivideo_h
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25 #define _SDL_gapivideo_h
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26
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27 #include "SDL_mouse.h"
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28 #include "SDL_mutex.h"
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29 #include "../SDL_sysvideo.h"
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30 #include "../windib/SDL_gapidibvideo.h"
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31
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32 /* From gx.h, since it's not really C compliant */
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33
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34 struct GXDisplayProperties {
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35 DWORD cxWidth;
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36 DWORD cyHeight; // notice lack of 'th' in the word height.
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37 long cbxPitch; // number of bytes to move right one x pixel - can be negative.
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38 long cbyPitch; // number of bytes to move down one y pixel - can be negative.
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39 long cBPP; // # of bits in each pixel
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40 DWORD ffFormat; // format flags.
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41 };
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42
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43 struct GXKeyList {
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44 short vkUp; // key for up
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45 POINT ptUp; // x,y position of key/button. Not on screen but in screen coordinates.
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46 short vkDown;
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47 POINT ptDown;
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48 short vkLeft;
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49 POINT ptLeft;
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50 short vkRight;
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51 POINT ptRight;
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52 short vkA;
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53 POINT ptA;
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54 short vkB;
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55 POINT ptB;
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56 short vkC;
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57 POINT ptC;
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58 short vkStart;
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59 POINT ptStart;
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60 };
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61
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62 typedef int (*PFNGXOpenDisplay)(HWND hWnd, DWORD dwFlags);
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63 typedef int (*PFNGXCloseDisplay)();
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64 typedef void* (*PFNGXBeginDraw)();
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65 typedef int (*PFNGXEndDraw)();
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66 typedef int (*PFNGXOpenInput)();
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67 typedef int (*PFNGXCloseInput)();
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68 typedef struct GXDisplayProperties (*PFNGXGetDisplayProperties)();
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69 typedef struct GXKeyList (*PFNGXGetDefaultKeys)(int iOptions);
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70 typedef int (*PFNGXSuspend)();
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71 typedef int (*PFNGXResume)();
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72 typedef int (*PFNGXSetViewport)( DWORD dwTop, DWORD dwHeight, DWORD dwReserved1, DWORD dwReserved2 );
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73 typedef BOOL (*PFNGXIsDisplayDRAMBuffer)();
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74
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75 struct GapiFunc
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76 {
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77 PFNGXOpenDisplay GXOpenDisplay;
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78 PFNGXCloseDisplay GXCloseDisplay;
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79 PFNGXBeginDraw GXBeginDraw;
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80 PFNGXEndDraw GXEndDraw;
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81 PFNGXOpenInput GXOpenInput;
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82 PFNGXCloseInput GXCloseInput;
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83 PFNGXGetDisplayProperties GXGetDisplayProperties;
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84 PFNGXGetDefaultKeys GXGetDefaultKeys;
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85 PFNGXSuspend GXSuspend;
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86 PFNGXResume GXResume;
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87 PFNGXSetViewport GXSetViewport;
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88 PFNGXIsDisplayDRAMBuffer GXIsDisplayDRAMBuffer;
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89 };
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90
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91 #define kfLandscape 0x8 // Screen is rotated 270 degrees
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92 #define kfPalette 0x10 // Pixel values are indexes into a palette
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93 #define kfDirect 0x20 // Pixel values contain actual level information
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94 #define kfDirect555 0x40 // 5 bits each for red, green and blue values in a pixel.
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95 #define kfDirect565 0x80 // 5 red bits, 6 green bits and 5 blue bits per pixel
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96 #define kfDirect888 0x100 // 8 bits each for red, green and blue values in a pixel.
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97 #define kfDirect444 0x200 // 4 red, 4 green, 4 blue
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98 #define kfDirectInverted 0x400
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99
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100 #define GX_FULLSCREEN 0x01 // for OpenDisplay()
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101 #define GX_NORMALKEYS 0x02
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102 #define GX_LANDSCAPEKEYS 0x03
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103
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104
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105 /* GAPI video mode */
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106 typedef enum {
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107 GAPI_NONE = 0,
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108 GAPI_DIRECT_565,
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109 GAPI_DIRECT_555,
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110 GAPI_MONO,
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111 GAPI_PALETTE
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112 } GAPIVideoMode;
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113
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114 typedef unsigned short PIXEL;
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115
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116 /* Private display data
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117 begin with DIB private structure to allow DIB events code sharing
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118 */
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119 struct GapiInfo {
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120 /* Rotation which has to be applied to the key (arrow keys) and mouse events measured in quarters of a circle
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121 * counter clockwise */
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122 int coordinateTransform;
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123 char hiresFix; /* using hires mode without defining hires resource */
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124 int invert; //TODO this is only written but never read, so it should be removed
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125
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126 #define NUM_MODELISTS 4 /* 8, 16, 24, and 32 bits-per-pixel */
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127 int SDL_nummodes[NUM_MODELISTS];
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128 SDL_Rect **SDL_modelist[NUM_MODELISTS];
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129
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130
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131 // The orientation of the video mode user wants to get
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132 // Probably restricted to UP and RIGHT
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133 SDL_ScreenOrientation userOrientation;
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134 // --------------
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135 int useGXOpenDisplay; /* use GXOpenDispplay */
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136 int alreadyGXOpened;
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137 int w, h;
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138 // The orientation of GAPI framebuffer.
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139 // Never changes on the same device.
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140 SDL_ScreenOrientation gapiOrientation;
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141
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142 void *buffer; // may be 8, 16, 24, 32 bpp
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143 PIXEL *videoMem;
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144 BOOL needUpdate;
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145 struct GXKeyList keyList;
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146 struct GapiFunc gxFunc;
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147 struct GXDisplayProperties gxProperties;
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148 GAPIVideoMode videoMode;
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149 int colorscale;
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150 int dstLineStep; // in bytes
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151 int dstPixelStep; // in bytes
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152 int startOffset; // in bytes
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153 int useVga;
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154 int suspended; // do not pu anything into video memory
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155 };
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159 #endif /* _SDL_gapivideo_h */