summaryrefslogtreecommitdiff
path: root/src/graphics.cpp
blob: 0a66bb663f8968964feeaa75516b95d8971f593c (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
/*
 *  The Mana World
 *  Copyright 2004 The Mana World Development Team
 *
 *  This file is part of The Mana World.
 *
 *  The Mana World is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  The Mana World is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with The Mana World; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  $Id$
 */

#include "graphics.h"

#include "log.h"

#include "graphic/imagerect.h"

#include "resources/image.h"

extern volatile int framesToDraw;

Graphics::Graphics():
    mScreen(0)
{
}

Graphics::~Graphics()
{
    _endDraw();
}

bool Graphics::setVideoMode(int w, int h, int bpp, bool fs, bool hwaccel)
{
    int displayFlags = SDL_ANYFORMAT;

    mFullscreen = fs;
    mHWAccel = hwaccel;

    if (fs) {
        displayFlags |= SDL_FULLSCREEN;
    }

    if (hwaccel) {
        displayFlags |= SDL_HWSURFACE | SDL_DOUBLEBUF;
    } else {
        displayFlags |= SDL_SWSURFACE;
    }

    mScreen = SDL_SetVideoMode(w, h, bpp, displayFlags);

    if (!mScreen) {
        return false;
    }

    char videoDriverName[64];

    if (SDL_VideoDriverName(videoDriverName, 64)) {
        logger->log("Using video driver: %s", videoDriverName);
    }
    else {
        logger->log("Using video driver: unkown");
    }

    const SDL_VideoInfo *vi = SDL_GetVideoInfo();

    logger->log("Possible to create hardware surfaces: %s",
            ((vi->hw_available) ? "yes" : "no"));
    logger->log("Window manager available: %s",
            ((vi->wm_available) ? "yes" : "no"));
    logger->log("Accelerated hardware to hardware blits: %s",
            ((vi->blit_hw) ? "yes" : "no"));
    logger->log("Accelerated hardware to hardware colorkey blits: %s",
            ((vi->blit_hw_CC) ? "yes" : "no"));
    logger->log("Accelerated hardware to hardware alpha blits: %s",
            ((vi->blit_hw_A) ? "yes" : "no"));
    logger->log("Accelerated software to hardware blits: %s",
            ((vi->blit_sw) ? "yes" : "no"));
    logger->log("Accelerated software to hardware colorkey blits: %s",
            ((vi->blit_sw_CC) ? "yes" : "no"));
    logger->log("Accelerated software to hardware alpha blits: %s",
            ((vi->blit_sw_A) ? "yes" : "no"));
    logger->log("Accelerated color fills: %s",
            ((vi->blit_fill) ? "yes" : "no"));
    logger->log("Available video memory: %d", vi->video_mem);

    setTarget(mScreen);

    return true;
}

bool Graphics::setFullscreen(bool fs)
{
    if (mFullscreen == fs) {
        return true;
    }

    return setVideoMode(mScreen->w, mScreen->h,
            mScreen->format->BitsPerPixel, fs, mHWAccel);
}

int Graphics::getWidth()
{
    return mScreen->w;
}

int Graphics::getHeight()
{
    return mScreen->h;
}

bool Graphics::drawImage(Image *image, int x, int y)
{
    return drawImage(image, 0, 0, x, y, image->bounds.w, image->bounds.h);
}

bool Graphics::drawImage(Image *image, int srcX, int srcY, int dstX, int dstY,
        int width, int height)
{
    dstX += mClipStack.top().xOffset;
    dstY += mClipStack.top().yOffset;

    srcX += image->bounds.x;
    srcY += image->bounds.y;

    // Check that preconditions for blitting are met.
    if (!mScreen || !image->mImage) return false;

    SDL_Rect dstRect;
    SDL_Rect srcRect;
    dstRect.x = dstX; dstRect.y = dstY;
    srcRect.x = srcX; srcRect.y = srcY;
    srcRect.w = width;
    srcRect.h = height;

    return !(SDL_BlitSurface(image->mImage, &srcRect, mScreen, &dstRect) < 0);
}

void Graphics::drawImagePattern(Image *image, int x, int y, int w, int h)
{
    int iw = image->getWidth();
    int ih = image->getHeight();
    if (iw == 0 || ih == 0) return;

    int px = 0;                       // X position on pattern plane
    int py = 0;                       // Y position on pattern plane

    while (py < h) {
        while (px < w) {
            int dw = (px + iw >= w) ? w - px : iw;
            int dh = (py + ih >= h) ? h - py : ih;
            drawImage(image, 0, 0, x + px, y + py, dw, dh);
            px += iw;
        }
        py += ih;
        px = 0;
    }
}

void
Graphics::drawImageRect(int x, int y, int w, int h,
                        Image *topLeft, Image *topRight,
                        Image *bottomLeft, Image *bottomRight,
                        Image *top, Image *right,
                        Image *bottom, Image *left,
                        Image *center)
{
    pushClipArea(gcn::Rectangle(x, y, w, h));

    // Draw the center area
    drawImagePattern(center,
            topLeft->getWidth(), topLeft->getHeight(),
            w - topLeft->getWidth() - topRight->getWidth(),
            h - topLeft->getHeight() - bottomLeft->getHeight());

    // Draw the sides
    drawImagePattern(top,
            left->getWidth(), 0,
            w - left->getWidth() - right->getWidth(), top->getHeight());
    drawImagePattern(bottom,
            left->getWidth(), h - bottom->getHeight(),
            w - left->getWidth() - right->getWidth(),
            bottom->getHeight());
    drawImagePattern(left,
            0, top->getHeight(),
            left->getWidth(),
            h - top->getHeight() - bottom->getHeight());
    drawImagePattern(right,
            w - right->getWidth(), top->getHeight(),
            right->getWidth(),
            h - top->getHeight() - bottom->getHeight());

    // Draw the corners
    drawImage(topLeft, 0, 0);
    drawImage(topRight, w - topRight->getWidth(), 0);
    drawImage(bottomLeft, 0, h - bottomLeft->getHeight());
    drawImage(bottomRight,
            w - bottomRight->getWidth(),
            h - bottomRight->getHeight());

    popClipArea();
}

void
Graphics::drawImageRect(int x, int y, int w, int h,
                        const ImageRect &imgRect)
{
    drawImageRect(x, y, w, h,
            imgRect.grid[0], imgRect.grid[2], imgRect.grid[6], imgRect.grid[8],
            imgRect.grid[1], imgRect.grid[5], imgRect.grid[7], imgRect.grid[3],
            imgRect.grid[4]);
}

void Graphics::updateScreen()
{
    SDL_Flip(mScreen);

    // Decrement frame counter when using framerate limiting
    if (framesToDraw > 1) framesToDraw--;

    // Wait while we're not allowed to draw next frame yet
    while (framesToDraw == 1)
    {
        SDL_Delay(10);
    }
}

SDL_Surface* Graphics::getScreenshot()
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
    int rmask = 0xff000000;
    int gmask = 0x00ff0000;
    int bmask = 0x0000ff00;
#else
    int rmask = 0x000000ff;
    int gmask = 0x0000ff00;
    int bmask = 0x00ff0000;
#endif
    int amask = 0x00000000;

    SDL_Surface *screenshot = SDL_CreateRGBSurface(SDL_SWSURFACE, mScreen->w,
            mScreen->h, 24, rmask, gmask, bmask, amask);

    SDL_BlitSurface(mScreen, NULL, screenshot, NULL);

    return screenshot;
}