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/* ScummVM - Scumm Interpreter
* Copyright (C) 2006 The ScummVM project
*
* 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 "graphics/cursorman.h"
#include "common/system.h"
#include "common/stack.h"
DECLARE_SINGLETON(Graphics::CursorManager);
namespace Graphics {
static bool g_initialized = false;
CursorManager::CursorManager() {
if (!g_initialized) {
g_initialized = true;
_cursorStack.clear();
_cursorPaletteStack.clear();
}
}
bool CursorManager::isVisible() {
if (_cursorStack.empty())
return false;
return _cursorStack.top()->_visible;
}
bool CursorManager::showMouse(bool visible) {
if (_cursorStack.empty())
return false;
_cursorStack.top()->_visible = visible;
// Should work, even if there's just a dummy cursor on the stack.
return g_system->showMouse(visible);
}
void CursorManager::pushCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor, int targetScale) {
Cursor *cur = new Cursor(buf, w, h, hotspotX, hotspotY, keycolor, targetScale);
cur->_visible = isVisible();
_cursorStack.push(cur);
if (buf) {
g_system->setMouseCursor(cur->_data, w, h, hotspotX, hotspotY, keycolor, targetScale);
}
}
void CursorManager::popCursor() {
if (_cursorStack.empty())
return;
Cursor *cur = _cursorStack.pop();
delete cur;
if (!_cursorStack.empty()) {
cur = _cursorStack.top();
g_system->setMouseCursor(cur->_data, cur->_width, cur->_height, cur->_hotspotX, cur->_hotspotY, cur->_keycolor, cur->_targetScale);
}
g_system->showMouse(isVisible());
}
void CursorManager::replaceCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor, int targetScale) {
if (_cursorStack.empty()) {
pushCursor(buf, w, h, hotspotX, hotspotY, keycolor, targetScale);
return;
}
Cursor *cur = _cursorStack.top();
uint size = w * h;
if (cur->_size < size) {
delete[] cur->_data;
cur->_data = new byte[size];
cur->_size = size;
}
if (buf && cur->_data)
memcpy(cur->_data, buf, size);
cur->_width = w;
cur->_height = h;
cur->_hotspotX = hotspotX;
cur->_hotspotY = hotspotY;
cur->_keycolor = keycolor;
cur->_targetScale = targetScale;
g_system->setMouseCursor(cur->_data, w, h, hotspotX, hotspotY, keycolor, targetScale);
}
void CursorManager::disableCursorPalette(bool disable) {
if (!g_system->hasFeature(OSystem::kFeatureCursorHasPalette))
return;
if (_cursorPaletteStack.empty())
return;
Palette *pal = _cursorPaletteStack.top();
pal->_disabled = disable;
g_system->disableCursorPalette(true);
}
void CursorManager::pushCursorPalette(const byte *colors, uint start, uint num) {
if (!g_system->hasFeature(OSystem::kFeatureCursorHasPalette))
return;
Palette *pal = new Palette(colors, start, num);
_cursorPaletteStack.push(pal);
if (num)
g_system->setCursorPalette(colors, start, num);
else
g_system->disableCursorPalette(true);
}
void CursorManager::popCursorPalette() {
if (!g_system->hasFeature(OSystem::kFeatureCursorHasPalette))
return;
if (_cursorPaletteStack.empty())
return;
Palette *pal = _cursorPaletteStack.pop();
delete pal;
if (_cursorPaletteStack.empty()) {
g_system->disableCursorPalette(true);
return;
}
pal = _cursorPaletteStack.top();
if (pal->_num && !pal->_disabled)
g_system->setCursorPalette(pal->_data, pal->_start, pal->_num);
else
g_system->disableCursorPalette(true);
}
void CursorManager::replaceCursorPalette(const byte *colors, uint start, uint num) {
if (!g_system->hasFeature(OSystem::kFeatureCursorHasPalette))
return;
if (_cursorPaletteStack.empty()) {
pushCursorPalette(colors, start, num);
return;
}
Palette *pal = _cursorPaletteStack.top();
uint size = 4 * num;
if (pal->_size < size) {
// Could not re-use the old buffer. Create a new one.
delete[] pal->_data;
pal->_data = new byte[size];
pal->_size = size;
}
pal->_start = start;
pal->_num = num;
if (num) {
memcpy(pal->_data, colors, 4 * num);
g_system->setCursorPalette(pal->_data, pal->_start, pal->_num);
} else {
g_system->disableCursorPalette(true);
}
}
} // End of namespace Graphics
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