Mercurial > sdl-ios-xcode
annotate src/video/bwindow/SDL_sysmouse.cc @ 3485:e77a69aae239
Mason Wheeler to sdl
I updated SDL, and suddenly my SDL frames stopped working. They'd "initialize" full of gibberish, and I couldn't render anything to them. After a bit of digging, I found a problem: the renderer initialization routine in my SDL frame code wasn't getting called anymore.
procedure TSdlFrame.Paint;
begin
if SDL_SelectRenderer(FWindowID) = -1 then
CreateRenderer;
SDL_RenderPresent;
end;
function TSdlFrame.CreateRenderer: boolean;
const
pf: tagPIXELFORMATDESCRIPTOR = (nSize: sizeof(pf); nVersion: 1;
dwFlags: PFD_DRAW_TO_WINDOW or PFD_SUPPORT_OPENGL or PFD_DOUBLEBUFFER;
iPixelType: PFD_TYPE_RGBA; cColorBits: 24; cAlphaBits: 8;
iLayerType: PFD_MAIN_PLANE);
RENDERERS: array[TRendererType] of AnsiString = ('software', 'gdi', 'opengl', 'd3d');
var
pFormat: integer;
begin
if (SDL_SelectRenderer(FWindowID) = 0) then
begin
result := true;
Exit;
end;
if FRendererType = rtOpenGL then
begin
pFormat := ChoosePixelFormat(canvas.Handle, @pf);
if not SetPixelFormat(canvas.Handle, pFormat, @pf) then
outputDebugString(PChar(SysErrorMessage(GetLastError)));
if wglCreateContext(canvas.Handle) = 0 then
outputDebugString(PChar(SysErrorMessage(GetLastError)));
end;
if (SDL_CreateRenderer(FWindowID, SDL_RendererIndex(RENDERERS[FRendererType]), [sdlrPresentFlip3, sdlrAccelerated]) = 0) then
begin
SDL_ShowWindow(FWindowID);
assert(SDL_SetRenderDrawColor(0, 0, 0, 255) = 0);
FFlags := SDL_GetWindowFlags(FWindowID);
if assigned(FOnAvailable) then
FOnAvailable(self);
end
else outputDebugString(pChar(format('SDL_CreateRenderer failed: %s', [sdl_GetError])));
result := SDL_SelectRenderer(FWindowID) = 0;
end;
This is a critical issue. The Paint method gets called when the control receives a WM_PAINT message from Windows. I can't create the renderer before then, or it will fail and cause trouble. And when I do create it, it needs to be created with certain parameters. So imagine my surprise when I started debugging into the DLL and found that SDL_SelectRenderer was trying to be "helpful" by creating the renderer for me if it didn't already exist! Now not only does my initialization code not get called, I end up with the wrong renderer and so things don't render as expected when I try to use the window.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 24 Nov 2009 04:48:12 +0000 |
parents | 99210400e8b9 |
children | b530ef003506 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
2859 | 3 Copyright (C) 1997-2009 Sam Lantinga |
0 | 4 |
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 |
0 | 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. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 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 |
0 | 18 |
19 Sam Lantinga | |
252
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 #include <AppKit.h> | |
25 #include <GameKit.h> | |
26 | |
27 #include "SDL_BWin.h" | |
28 | |
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29 extern "C" |
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30 { |
0 | 31 |
32 #include "SDL_sysmouse_c.h" | |
33 | |
34 /* Convert bits to padded bytes */ | |
35 #define PADDED_BITS(bits) ((bits+7)/8) | |
36 | |
37 /* The implementation dependent data for the window manager cursor */ | |
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38 struct WMcursor |
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39 { |
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40 char *bits; |
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41 }; |
0 | 42 |
43 /* Can this be done in the BeOS? */ | |
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44 WMcursor *BE_CreateWMCursor(_THIS, |
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45 Uint8 * data, Uint8 * mask, int w, int h, |
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46 int hot_x, int hot_y) |
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47 { |
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48 WMcursor *cursor; |
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49 int allowed_x; |
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50 int allowed_y; |
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51 int run, pad, i; |
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52 char *cptr; |
0 | 53 |
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54 allowed_x = 16; /* BeOS limitation */ |
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55 allowed_y = 16; /* BeOS limitation */ |
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56 if ((w > allowed_x) || (h > allowed_y)) |
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57 { |
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58 SDL_SetError("Only cursors of dimension (%dx%d) are allowed", |
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59 allowed_x, allowed_y); |
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60 return (NULL); |
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61 } |
0 | 62 |
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63 /* Allocate the cursor */ |
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64 cursor = (WMcursor *) SDL_malloc(sizeof(WMcursor)); |
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65 if (cursor == NULL) { |
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66 SDL_OutOfMemory(); |
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67 return (NULL); |
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68 } |
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69 cursor->bits = |
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70 (char *) SDL_malloc(4 + 2 * ((allowed_x / 8) * allowed_y)); |
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71 if (cursor->bits == NULL) { |
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72 SDL_free(cursor); |
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73 SDL_OutOfMemory(); |
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74 return (NULL); |
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75 } |
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76 cursor->bits[0] = allowed_y; /* Size of the cursor */ |
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77 cursor->bits[1] = 1; /* Bit depth of cursor */ |
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78 cursor->bits[2] = hot_y; |
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79 cursor->bits[3] = hot_x; |
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80 cptr = &cursor->bits[4]; |
0 | 81 |
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82 /* Pad out to the normal cursor size */ |
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83 run = PADDED_BITS(w); |
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84 pad = PADDED_BITS(allowed_x) - run; |
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85 for (i = 0; i < h; ++i) { |
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86 SDL_memcpy(cptr, data, run); |
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87 SDL_memset(cptr + run, 0, pad); |
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88 data += run; |
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89 cptr += (run + pad); |
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90 } |
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91 for (; i < allowed_y; ++i) { |
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92 SDL_memset(cptr, 0, run + pad); |
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93 cptr += (run + pad); |
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94 } |
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95 for (i = 0; i < h; ++i) { |
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96 /* FIXME: The mask should be OR'd with the data to turn |
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97 inverted color pixels black, since inverted color pixels |
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98 aren't supported under BeOS. |
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99 */ |
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100 SDL_memcpy(cptr, mask, run); |
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101 SDL_memset(cptr + run, 0, pad); |
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102 mask += run; |
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103 cptr += (run + pad); |
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104 } |
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105 for (; i < allowed_y; ++i) { |
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106 SDL_memset(cptr, 0, run + pad); |
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107 cptr += (run + pad); |
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108 } |
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109 return (cursor); |
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110 } |
0 | 111 |
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112 int BE_ShowWMCursor(_THIS, WMcursor * cursor) |
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113 { |
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114 if (be_app->Lock()) { |
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115 if (cursor == NULL) { |
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116 if (SDL_BlankCursor != NULL) { |
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117 be_app->SetCursor(SDL_BlankCursor->bits); |
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118 } |
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119 } else { |
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120 be_app->SetCursor(cursor->bits); |
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121 } |
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122 be_app->Unlock(); |
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123 } |
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124 return (1); |
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125 } |
0 | 126 |
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127 void BE_FreeWMCursor(_THIS, WMcursor * cursor) |
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128 { |
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129 SDL_free(cursor->bits); |
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130 SDL_free(cursor); |
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131 } |
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133 /* Implementation by Christian Bauer <cbauer@student.physik.uni-mainz.de> */ | |
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134 void BE_WarpWMCursor(_THIS, Uint16 x, Uint16 y) |
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135 { |
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136 BPoint pt(x, y); |
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137 SDL_Win->Lock(); |
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138 SDL_Win->ConvertToScreen(&pt); |
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139 SDL_Win->Unlock(); |
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140 set_mouse_position((int32) pt.x, (int32) pt.y); |
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141 } |
0 | 142 |
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143 }; /* Extern C */ |
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144 |
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145 /* vi: set ts=4 sw=4 expandtab: */ |