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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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 (at your option) any later version.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "backends/platform/gp2xwiz/gp2xwiz-sdl.h"
#include "common/mutex.h"
#include "graphics/font.h"
#include "graphics/fontman.h"
#include "graphics/scaler.h"
#include "graphics/scaler/aspect.h"
#include "graphics/scaler/downscaler.h"
#include "graphics/surface.h"
static const OSystem::GraphicsMode s_supportedGraphicsModes[] = {
{"1x", "Fullscreen", GFX_NORMAL},
// {"�x", "Downscale", GFX_HALF},
{0, 0, 0}
};
const OSystem::GraphicsMode *OSystem_GP2XWIZ::getSupportedGraphicsModes() const {
return s_supportedGraphicsModes;
}
int OSystem_GP2XWIZ::getDefaultGraphicsMode() const {
return GFX_NORMAL;
}
bool OSystem_GP2XWIZ::setGraphicsMode(int mode) {
Common::StackLock lock(_graphicsMutex);
assert(_transactionMode == kTransactionActive);
if (_oldVideoMode.setup && _oldVideoMode.mode == mode)
return true;
int newScaleFactor = 1;
switch (mode) {
case GFX_NORMAL:
newScaleFactor = 1;
break;
case GFX_HALF:
newScaleFactor = 1;
break;
default:
warning("unknown gfx mode %d", mode);
return false;
}
_transactionDetails.normal1xScaler = (mode == GFX_NORMAL);
if (_oldVideoMode.setup && _oldVideoMode.scaleFactor != newScaleFactor)
_transactionDetails.needHotswap = true;
_transactionDetails.needUpdatescreen = true;
_videoMode.mode = mode;
_videoMode.scaleFactor = newScaleFactor;
return true;
}
void OSystem_GP2XWIZ::setGraphicsModeIntern() {
Common::StackLock lock(_graphicsMutex);
ScalerProc *newScalerProc = 0;
switch (_videoMode.mode) {
case GFX_NORMAL:
newScalerProc = Normal1x;
break;
case GFX_HALF:
newScalerProc = DownscaleAllByHalf;
break;
default:
error("Unknown gfx mode %d", _videoMode.mode);
}
_scalerProc = newScalerProc;
if (!_screen || !_hwscreen)
return;
// Blit everything to the screen
_forceFull = true;
// Even if the old and new scale factors are the same, we may have a
// different scaler for the cursor now.
blitCursor();
}
void OSystem_GP2XWIZ::initSize(uint w, uint h) {
assert(_transactionMode == kTransactionActive);
// Avoid redundant res changes
if ((int)w == _videoMode.screenWidth && (int)h == _videoMode.screenHeight)
return;
_videoMode.screenWidth = w;
_videoMode.screenHeight = h;
if (w > 320 || h > 240){
setGraphicsMode(GFX_HALF);
setGraphicsModeIntern();
toggleMouseGrab();
}
_transactionDetails.sizeChanged = true;
}
bool OSystem_GP2XWIZ::loadGFXMode() {
_videoMode.overlayWidth = 320;
_videoMode.overlayHeight = 240;
_videoMode.fullscreen = true;
if (_videoMode.screenHeight != 200 && _videoMode.screenHeight != 400)
_videoMode.aspectRatioCorrection = false;
return OSystem_SDL::loadGFXMode();
}
void OSystem_GP2XWIZ::drawMouse() {
if (!_mouseVisible || !_mouseSurface) {
_mouseBackup.x = _mouseBackup.y = _mouseBackup.w = _mouseBackup.h = 0;
return;
}
SDL_Rect dst;
int scale;
int width, height;
int hotX, hotY;
if (_videoMode.mode == GFX_HALF && !_overlayVisible){
dst.x = _mouseCurState.x/2;
dst.y = _mouseCurState.y/2;
} else {
dst.x = _mouseCurState.x;
dst.y = _mouseCurState.y;
}
if (!_overlayVisible) {
scale = _videoMode.scaleFactor;
width = _videoMode.screenWidth;
height = _videoMode.screenHeight;
dst.w = _mouseCurState.vW;
dst.h = _mouseCurState.vH;
hotX = _mouseCurState.vHotX;
hotY = _mouseCurState.vHotY;
} else {
scale = 1;
width = _videoMode.overlayWidth;
height = _videoMode.overlayHeight;
dst.w = _mouseCurState.rW;
dst.h = _mouseCurState.rH;
hotX = _mouseCurState.rHotX;
hotY = _mouseCurState.rHotY;
}
// The mouse is undrawn using virtual coordinates, i.e. they may be
// scaled and aspect-ratio corrected.
_mouseBackup.x = dst.x - hotX;
_mouseBackup.y = dst.y - hotY;
_mouseBackup.w = dst.w;
_mouseBackup.h = dst.h;
// We draw the pre-scaled cursor image, so now we need to adjust for
// scaling, shake position and aspect ratio correction manually.
if (!_overlayVisible) {
dst.y += _currentShakePos;
}
if (_videoMode.aspectRatioCorrection && !_overlayVisible)
dst.y = real2Aspect(dst.y);
dst.x = scale * dst.x - _mouseCurState.rHotX;
dst.y = scale * dst.y - _mouseCurState.rHotY;
dst.w = _mouseCurState.rW;
dst.h = _mouseCurState.rH;
// Note that SDL_BlitSurface() and addDirtyRect() will both perform any
// clipping necessary
if (SDL_BlitSurface(_mouseSurface, NULL, _hwscreen, &dst) != 0)
error("SDL_BlitSurface failed: %s", SDL_GetError());
// The screen will be updated using real surface coordinates, i.e.
// they will not be scaled or aspect-ratio corrected.
addDirtyRect(dst.x, dst.y, dst.w, dst.h, true);
}
void OSystem_GP2XWIZ::undrawMouse() {
const int x = _mouseBackup.x;
const int y = _mouseBackup.y;
// When we switch bigger overlay off mouse jumps. Argh!
// This is intended to prevent undrawing offscreen mouse
if (!_overlayVisible && (x >= _videoMode.screenWidth || y >= _videoMode.screenHeight))
return;
if (_mouseBackup.w != 0 && _mouseBackup.h != 0){
if (_videoMode.mode == GFX_HALF && !_overlayVisible){
addDirtyRect(x*2, y*2, _mouseBackup.w*2, _mouseBackup.h*2);
} else {
addDirtyRect(x, y, _mouseBackup.w, _mouseBackup.h);
}
}
}
void OSystem_GP2XWIZ::internUpdateScreen() {
SDL_Surface *srcSurf, *origSurf;
int height, width;
ScalerProc *scalerProc;
int scale1;
#if defined (DEBUG) && ! defined(_WIN32_WCE) // definitions not available for non-DEBUG here. (needed this to compile in SYMBIAN32 & linux?)
assert(_hwscreen != NULL);
assert(_hwscreen->map->sw_data != NULL);
#endif
// If the shake position changed, fill the dirty area with blackness
if (_currentShakePos != _newShakePos) {
SDL_Rect blackrect = {0, 0, _videoMode.screenWidth * _videoMode.scaleFactor, _newShakePos * _videoMode.scaleFactor};
if (_videoMode.aspectRatioCorrection && !_overlayVisible)
blackrect.h = real2Aspect(blackrect.h - 1) + 1;
SDL_FillRect(_hwscreen, &blackrect, 0);
_currentShakePos = _newShakePos;
_forceFull = true;
}
// Check whether the palette was changed in the meantime and update the
// screen surface accordingly.
if (_screen && _paletteDirtyEnd != 0) {
SDL_SetColors(_screen, _currentPalette + _paletteDirtyStart,
_paletteDirtyStart,
_paletteDirtyEnd - _paletteDirtyStart);
_paletteDirtyEnd = 0;
_forceFull = true;
}
#ifdef USE_OSD
// OSD visible (i.e. non-transparent)?
if (_osdAlpha != SDL_ALPHA_TRANSPARENT) {
// Updated alpha value
const int diff = SDL_GetTicks() - _osdFadeStartTime;
if (diff > 0) {
if (diff >= kOSDFadeOutDuration) {
// Back to full transparency
_osdAlpha = SDL_ALPHA_TRANSPARENT;
} else {
// Do a linear fade out...
const int startAlpha = SDL_ALPHA_TRANSPARENT + kOSDInitialAlpha * (SDL_ALPHA_OPAQUE - SDL_ALPHA_TRANSPARENT) / 100;
_osdAlpha = startAlpha + diff * (SDL_ALPHA_TRANSPARENT - startAlpha) / kOSDFadeOutDuration;
}
SDL_SetAlpha(_osdSurface, SDL_RLEACCEL | SDL_SRCCOLORKEY | SDL_SRCALPHA, _osdAlpha);
_forceFull = true;
}
}
#endif
if (!_overlayVisible) {
origSurf = _screen;
srcSurf = _tmpscreen;
width = _videoMode.screenWidth;
height = _videoMode.screenHeight;
scalerProc = _scalerProc;
scale1 = _videoMode.scaleFactor;
} else {
origSurf = _overlayscreen;
srcSurf = _tmpscreen2;
width = _videoMode.overlayWidth;
height = _videoMode.overlayHeight;
scalerProc = Normal1x;
scale1 = 1;
}
// Add the area covered by the mouse cursor to the list of dirty rects if
// we have to redraw the mouse.
if (_mouseNeedsRedraw)
undrawMouse();
// Force a full redraw if requested
if (_forceFull) {
_numDirtyRects = 1;
_dirtyRectList[0].x = 0;
_dirtyRectList[0].y = 0;
_dirtyRectList[0].w = width;
_dirtyRectList[0].h = height;
}
// Only draw anything if necessary
if (_numDirtyRects > 0 || _mouseNeedsRedraw) {
SDL_Rect *r;
SDL_Rect dst;
uint32 srcPitch, dstPitch;
SDL_Rect *lastRect = _dirtyRectList + _numDirtyRects;
for (r = _dirtyRectList; r != lastRect; ++r) {
dst = *r;
dst.x++; // Shift rect by one since 2xSai needs to access the data around
dst.y++; // any pixel to scale it, and we want to avoid mem access crashes.
if (SDL_BlitSurface(origSurf, r, srcSurf, &dst) != 0)
error("SDL_BlitSurface failed: %s", SDL_GetError());
}
SDL_LockSurface(srcSurf);
SDL_LockSurface(_hwscreen);
srcPitch = srcSurf->pitch;
dstPitch = _hwscreen->pitch;
for (r = _dirtyRectList; r != lastRect; ++r) {
register int dst_y = r->y + _currentShakePos;
register int dst_h = 0;
register int dst_w = r->w;
register int orig_dst_y = 0;
register int dst_x = r->x;
register int src_y;
register int src_x;
if (dst_y < height) {
dst_h = r->h;
if (dst_h > height - dst_y)
dst_h = height - dst_y;
orig_dst_y = dst_y;
src_x = dst_x;
src_y = dst_y;
if (_videoMode.aspectRatioCorrection && !_overlayVisible)
dst_y = real2Aspect(dst_y);
assert(scalerProc != NULL);
if (_videoMode.mode == GFX_HALF && scalerProc == DownscaleAllByHalf){
if (dst_x%2==1){
dst_x--;
dst_w++;
}
if (dst_y%2==1){
dst_y--;
dst_h++;
}
src_x = dst_x;
src_y = dst_y;
dst_x = dst_x / 2;
dst_y = dst_y / 2;
}
scalerProc((byte *)srcSurf->pixels + (src_x * 2 + 2) + (src_y + 1) * srcPitch, srcPitch,
(byte *)_hwscreen->pixels + dst_x * 2 + dst_y * dstPitch, dstPitch, dst_w, dst_h);
}
if (_videoMode.mode == GFX_HALF && scalerProc == DownscaleAllByHalf){
r->w = r->w / 2;
r->h = dst_h / 2;
} else {
r->w = r->w;
r->h = dst_h;
}
r->x = dst_x;
r->y = dst_y;
#ifdef USE_SCALERS
if (_videoMode.aspectRatioCorrection && orig_dst_y < height && !_overlayVisible)
r->h = stretch200To240((uint8 *) _hwscreen->pixels, dstPitch, r->w, r->h, r->x, r->y, orig_dst_y * scale1);
#endif
}
SDL_UnlockSurface(srcSurf);
SDL_UnlockSurface(_hwscreen);
// Readjust the dirty rect list in case we are doing a full update.
// This is necessary if shaking is active.
if (_forceFull) {
_dirtyRectList[0].y = 0;
_dirtyRectList[0].h = (_videoMode.mode == GFX_HALF) ? effectiveScreenHeight()/2 : effectiveScreenHeight();
}
drawMouse();
#ifdef USE_OSD
if (_osdAlpha != SDL_ALPHA_TRANSPARENT) {
SDL_BlitSurface(_osdSurface, 0, _hwscreen, 0);
}
#endif
// Finally, blit all our changes to the screen
SDL_UpdateRects(_hwscreen, _numDirtyRects, _dirtyRectList);
}
_numDirtyRects = 0;
_forceFull = false;
_mouseNeedsRedraw = false;
}
void OSystem_GP2XWIZ::showOverlay() {
if (_videoMode.mode == GFX_HALF){
_mouseCurState.x = _mouseCurState.x / 2;
_mouseCurState.y = _mouseCurState.y / 2;
}
OSystem_SDL::showOverlay();
}
void OSystem_GP2XWIZ::hideOverlay() {
if (_videoMode.mode == GFX_HALF){
_mouseCurState.x = _mouseCurState.x * 2;
_mouseCurState.y = _mouseCurState.y * 2;
}
OSystem_SDL::hideOverlay();
}
void OSystem_GP2XWIZ::warpMouse(int x, int y) {
if (_mouseCurState.x != x || _mouseCurState.y != y) {
if (_videoMode.mode == GFX_HALF && !_overlayVisible){
x = x / 2;
y = y / 2;
}
}
OSystem_SDL::warpMouse(x, y);
}
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