Mercurial > sdl-ios-xcode
annotate src/video/bwindow/SDL_BView.h @ 1555:780fd5b61df1
Fixed bug #89
Date: Sun, 23 Oct 2005 16:39:03 +0200
From: "A. Schmid" <sahib@phreaker.net>
Subject: [SDL] no software surfaces with svgalib driver?
Hi,
I noticed that the SDL (1.2.9) svgalib driver only makes use of linear
addressable (framebuffer) video modes. On older systems (like one of
mine), linear addressable modes are often not available.
Especially for cards with VESA VBE < 2.0 the svgalib vesa driver is
unusable, since VESA only supports framebuffering for VBE 2.0 and later.
The changes necessary to add support for software surfaces seem to be
relatively small. I only had to hack src/video/svga/SDL_svgavideo.c (see
attached patch). The code worked fine for me, but it is no more than a
proof of concept and should be reviewed (probably has a memory leak when
switching modes). It also uses the vgagl library (included in the
svgalib package) and needs to be linked against it.
-Alex
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Mar 2006 12:05:16 +0000 |
| parents | d910939febfa |
| children | 782fd950bd46 c121d94672cb 678576473849 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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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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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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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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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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Use consistent identifiers for the various platforms we support.
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22 #include "SDL_config.h" |
| 0 | 23 |
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24 #ifndef _SDL_BView_h |
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25 #define _SDL_BView_h |
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26 |
| 0 | 27 /* This is the event handling and graphics update portion of SDL_BWin */ |
| 28 | |
| 29 extern "C" { | |
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30 #include "../../events/SDL_events_c.h" |
| 0 | 31 }; |
| 32 | |
| 33 class SDL_BView : public BView | |
| 34 { | |
| 35 public: | |
| 36 SDL_BView(BRect frame) : | |
| 37 BView(frame, "SDL View", B_FOLLOW_ALL_SIDES, | |
| 38 (B_WILL_DRAW|B_FRAME_EVENTS)) { | |
| 39 image = NULL; | |
| 40 xoff = yoff = 0; | |
| 41 SetViewColor(0,0,0,0); | |
| 42 SetHighColor(0,0,0,0); | |
| 43 } | |
| 44 virtual ~SDL_BView() { | |
| 45 SetBitmap(NULL); | |
| 46 } | |
| 47 /* Set drawing offsets for fullscreen mode */ | |
| 48 virtual void SetXYOffset(int x, int y) { | |
| 49 xoff = x; | |
| 50 yoff = y; | |
| 51 } | |
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52 virtual void GetXYOffset(int &x, int &y) { |
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53 x = xoff; |
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54 y = yoff; |
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55 } |
| 0 | 56 /* The view changed size. If it means we're in fullscreen, we |
| 57 * draw a nice black box in the entire view to get black borders. | |
| 58 */ | |
| 59 virtual void FrameResized(float width, float height) { | |
| 60 BRect bounds; | |
| 61 bounds.top = bounds.left = 0; | |
| 62 bounds.right = width; | |
| 63 bounds.bottom = height; | |
| 64 /* Fill the entire view with black */ | |
| 65 FillRect(bounds, B_SOLID_HIGH); | |
| 66 /* And if there's an image, redraw it. */ | |
| 67 if( image ) { | |
| 68 bounds = image->Bounds(); | |
| 69 Draw(bounds); | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 /* Drawing portion of this complete breakfast. :) */ | |
| 74 virtual void SetBitmap(BBitmap *bitmap) { | |
| 75 if ( image ) { | |
| 76 delete image; | |
| 77 } | |
| 78 image = bitmap; | |
| 79 } | |
| 80 virtual void Draw(BRect updateRect) { | |
| 81 if ( image ) { | |
| 82 if(xoff || yoff) { | |
| 83 BRect dest; | |
| 84 dest.top = updateRect.top + yoff; | |
| 85 dest.left = updateRect.left + xoff; | |
| 86 dest.bottom = updateRect.bottom + yoff; | |
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87 dest.right = updateRect.right + xoff; |
| 0 | 88 DrawBitmap(image, updateRect, dest); |
| 89 } else { | |
| 90 DrawBitmap(image, updateRect, updateRect); | |
| 91 } | |
| 92 } | |
| 93 } | |
| 94 virtual void DrawAsync(BRect updateRect) { | |
| 95 if(xoff || yoff) { | |
| 96 BRect dest; | |
| 97 dest.top = updateRect.top + yoff; | |
| 98 dest.left = updateRect.left + xoff; | |
| 99 dest.bottom = updateRect.bottom + yoff; | |
| 100 dest.right = updateRect.right + xoff;; | |
| 101 DrawBitmapAsync(image, updateRect, dest); | |
| 102 } else { | |
| 103 DrawBitmapAsync(image, updateRect, updateRect); | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 private: | |
| 108 BBitmap *image; | |
| 109 int xoff, yoff; | |
| 110 }; | |
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111 |
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112 #endif /* _SDL_BView_h */ |