Mercurial > sdl-ios-xcode
annotate src/video/SDL_drawpoint.c @ 3566:07c8339c95c6
Fixed bug #905
Give the foreign window message proc more control over Windows events.
This may need to be adjusted when we add the capability for the app to specify whether it wants SDL to handle input for the window or not.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 15 Dec 2009 09:20:10 +0000 |
| parents | 0267b8b1595c |
| children | f638ded38b8a |
| rev | line source |
|---|---|
| 2901 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 3 Copyright (C) 1997-2009 Sam Lantinga | |
| 4 | |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Lesser General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2.1 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Lesser General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Lesser General Public | |
| 16 License along with this library; if not, write to the Free Software | |
| 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 18 | |
| 19 Sam Lantinga | |
| 20 slouken@libsdl.org | |
| 21 */ | |
| 22 #include "SDL_config.h" | |
| 23 | |
| 24 #include "SDL_draw.h" | |
| 25 | |
| 26 | |
| 27 int | |
| 28 SDL_DrawPoint(SDL_Surface * dst, int x, int y, Uint32 color) | |
| 29 { | |
|
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parents:
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30 if (!dst) { |
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parents:
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31 SDL_SetError("Passed NULL destination surface"); |
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parents:
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32 return -1; |
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parents:
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33 } |
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Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
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34 |
| 2901 | 35 /* This function doesn't work on surfaces < 8 bpp */ |
| 36 if (dst->format->BitsPerPixel < 8) { | |
| 3160 | 37 SDL_SetError("SDL_DrawPoint(): Unsupported surface format"); |
|
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parents:
3160
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38 return -1; |
| 2901 | 39 } |
| 40 | |
| 41 /* Perform clipping */ | |
| 42 if (x < dst->clip_rect.x || y < dst->clip_rect.y || | |
| 43 x >= (dst->clip_rect.x + dst->clip_rect.w) || | |
| 44 y >= (dst->clip_rect.y + dst->clip_rect.h)) { | |
| 45 return 0; | |
| 46 } | |
| 47 | |
| 48 switch (dst->format->BytesPerPixel) { | |
| 49 case 1: | |
| 50 DRAW_FASTSETPIXEL1(x, y); | |
| 51 break; | |
| 52 case 2: | |
| 53 DRAW_FASTSETPIXEL2(x, y); | |
| 54 break; | |
| 55 case 3: | |
| 56 SDL_Unsupported(); | |
| 57 return -1; | |
| 58 case 4: | |
| 59 DRAW_FASTSETPIXEL4(x, y); | |
| 60 break; | |
| 61 } | |
| 62 return 0; | |
| 63 } | |
| 64 | |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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65 int |
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parents:
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66 SDL_DrawPoints(SDL_Surface * dst, const SDL_Point * points, int count, |
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parents:
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67 Uint32 color) |
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parents:
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68 { |
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parents:
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69 int minx, miny; |
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parents:
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70 int maxx, maxy; |
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parents:
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71 int i; |
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parents:
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72 int x, y; |
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parents:
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73 |
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parents:
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74 if (!dst) { |
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Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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75 SDL_SetError("Passed NULL destination surface"); |
|
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Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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76 return -1; |
|
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Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
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77 } |
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Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
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78 |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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79 /* This function doesn't work on surfaces < 8 bpp */ |
|
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Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
|
80 if (dst->format->BitsPerPixel < 8) { |
|
0267b8b1595c
Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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81 SDL_SetError("SDL_DrawPoints(): Unsupported surface format"); |
|
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Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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82 return -1; |
|
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Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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83 } |
|
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Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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84 |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
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85 minx = dst->clip_rect.x; |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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86 maxx = dst->clip_rect.x + dst->clip_rect.w - 1; |
|
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Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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87 miny = dst->clip_rect.y; |
|
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Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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88 maxy = dst->clip_rect.y + dst->clip_rect.h - 1; |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
3160
diff
changeset
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89 |
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parents:
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90 for (i = 0; i < count; ++i) { |
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parents:
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91 x = points[i].x; |
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parents:
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92 y = points[i].y; |
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parents:
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changeset
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93 |
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parents:
3160
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94 if (x < minx || x > maxx || y < miny || y > maxy) { |
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parents:
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95 continue; |
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parents:
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96 } |
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parents:
3160
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97 |
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parents:
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98 switch (dst->format->BytesPerPixel) { |
|
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parents:
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99 case 1: |
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parents:
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100 DRAW_FASTSETPIXEL1(x, y); |
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parents:
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101 break; |
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parents:
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102 case 2: |
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parents:
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103 DRAW_FASTSETPIXEL2(x, y); |
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parents:
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104 break; |
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parents:
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105 case 3: |
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parents:
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106 SDL_Unsupported(); |
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parents:
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107 return -1; |
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parents:
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diff
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108 case 4: |
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parents:
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109 DRAW_FASTSETPIXEL4(x, y); |
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parents:
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110 break; |
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parents:
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111 } |
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parents:
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112 } |
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parents:
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113 return 0; |
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parents:
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114 } |
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parents:
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115 |
| 2901 | 116 /* vi: set ts=4 sw=4 expandtab: */ |