mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-14 21:59:17 +00:00
299 lines
11 KiB
C++
299 lines
11 KiB
C++
/* 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#ifndef GRAPHICS_CURSORMAN_H
|
|
#define GRAPHICS_CURSORMAN_H
|
|
|
|
#include "common/scummsys.h"
|
|
#include "common/stack.h"
|
|
#include "common/singleton.h"
|
|
#include "graphics/cursor.h"
|
|
#include "graphics/surface.h"
|
|
|
|
namespace Graphics {
|
|
|
|
/**
|
|
* @defgroup graphics_cursorman Cursor manager
|
|
* @ingroup graphics
|
|
*
|
|
* @brief The CursorManager class for managing the behavior of the mouse cursor.
|
|
*
|
|
* @{
|
|
*/
|
|
|
|
class CursorManager : public Common::Singleton<CursorManager> {
|
|
public:
|
|
/** Return whether the mouse cursor is visible. */
|
|
bool isVisible();
|
|
|
|
/**
|
|
* Show or hide the mouse cursor.
|
|
*
|
|
* This function does not call OSystem::updateScreen, when visible is true.
|
|
* You may need to call OSystem::updateScreen after a call to showMouse(true)
|
|
* to ensure that the mouse cursor becomes visible.
|
|
*
|
|
* @todo We might want to reconsider this behavior, it might be confusing
|
|
* for the user to call OSystem::updateScreen separately, on the other
|
|
* hand OSystem::updateScreen might as well display unwanted changes on
|
|
* the screen. Another alternative would be to let the backend worry
|
|
* about this on OSystem::showMouse call.
|
|
*
|
|
* @see OSystem::showMouse.
|
|
*/
|
|
bool showMouse(bool visible);
|
|
|
|
/**
|
|
* Push a new cursor onto the stack, and set it in the backend.
|
|
*
|
|
* A local copy of the cursor data will be made, so the original buffer
|
|
* can be safely freed afterwards.
|
|
*
|
|
* @param buf New cursor data.
|
|
* @param w Width.
|
|
* @param h Height.
|
|
* @param hotspotX Hotspot X coordinate.
|
|
* @param hotspotY Hotspot Y coordinate.
|
|
* @param keycolor Color value for the transparent color. This cannot exceed
|
|
* the maximum color value as defined by format.
|
|
* Does nothing if mask is set.
|
|
* @param dontScale Whether the cursor should never be scaled. An exception are high PPI displays, where the cursor
|
|
* would be too small to notice otherwise. These are allowed to scale the cursor anyway.
|
|
* @param format Pointer to the pixel format that the cursor graphic uses.
|
|
* CLUT8 will be used if this is null or not specified.
|
|
* @param mask Optional pointer to cursor mask containing values from the CursorMaskValue enum.
|
|
*
|
|
* @note It is acceptable for the buffer to be a null pointer. It is sometimes
|
|
* useful to push a "dummy" cursor and modify it later. The
|
|
* cursor will be added to the stack, but not to the backend.
|
|
*/
|
|
void pushCursor(const void *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, bool dontScale = false, const Graphics::PixelFormat *format = NULL, const byte *mask = nullptr);
|
|
|
|
/**
|
|
* Push a new cursor onto the stack, and set it in the backend.
|
|
*
|
|
* A local copy of the cursor data will be made, so the original surface
|
|
* can be safely freed afterwards.
|
|
*
|
|
* @param surf New cursor surface.
|
|
* @param hotspotX Hotspot X coordinate.
|
|
* @param hotspotY Hotspot Y coordinate.
|
|
* @param keycolor Color value for the transparent color. This cannot exceed
|
|
* the maximum color value as defined by format.
|
|
* Does nothing if mask is set.
|
|
* @param dontScale Whether the cursor should never be scaled. An exception are high PPI displays, where the cursor
|
|
* would be too small to notice otherwise. These are allowed to scale the cursor anyway.
|
|
* @param mask Optional pointer to cursor mask containing values from the CursorMaskValue enum.
|
|
*
|
|
* @note It is acceptable for the surface to be empty. It is sometimes
|
|
* useful to push a "dummy" cursor and modify it later. The
|
|
* cursor will be added to the stack, but not to the backend.
|
|
*/
|
|
void pushCursor(const Surface &surf, int hotspotX, int hotspotY, uint32 keycolor, bool dontScale = false, const byte *mask = nullptr);
|
|
|
|
/**
|
|
* Pop a cursor from the stack, and restore the previous one to the
|
|
* backend.
|
|
*
|
|
* If there is no previous cursor, the cursor is hidden.
|
|
*/
|
|
void popCursor();
|
|
|
|
/**
|
|
* Replace the current cursor on the stack.
|
|
*
|
|
* If the stack is empty, the cursor is pushed instead. This is a slightly
|
|
* more optimized way of popping the old cursor before pushing the new one.
|
|
*
|
|
* @param buf New cursor data.
|
|
* @param mask New cursor mask data.
|
|
* @param w Width.
|
|
* @param h Height.
|
|
* @param hotspotX Hotspot X coordinate.
|
|
* @param hotspotY Hotspot Y coordinate.
|
|
* @param keycolor Color value for the transparent color. This cannot exceed
|
|
* the maximum color value as defined by format.
|
|
* Does nothing if mask is set.
|
|
* @param dontScale Whether the cursor should never be scaled. An exception are high PPI displays, where the cursor
|
|
* would be too small to notice otherwise. These are allowed to scale the cursor anyway.
|
|
* @param format Pointer to the pixel format that the cursor graphic uses,
|
|
* CLUT8 will be used if this is null or not specified.
|
|
* @param mask Optional pointer to cursor mask containing values from the CursorMaskValue enum.
|
|
*/
|
|
void replaceCursor(const void *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, bool dontScale = false, const Graphics::PixelFormat *format = nullptr, const byte *mask = nullptr);
|
|
|
|
/**
|
|
* Replace the current cursor on the stack.
|
|
*
|
|
* If the stack is empty, the cursor is pushed instead. This is a slightly
|
|
* more optimized way of popping the old cursor before pushing the new one.
|
|
*
|
|
* @param surf New cursor surface.
|
|
* @param mask New cursor mask data.
|
|
* @param hotspotX Hotspot X coordinate.
|
|
* @param hotspotY Hotspot Y coordinate.
|
|
* @param keycolor Color value for the transparent color. This cannot exceed
|
|
* the maximum color value as defined by format.
|
|
* Does nothing if mask is set.
|
|
* @param dontScale Whether the cursor should never be scaled. An exception are high PPI displays, where the cursor
|
|
* would be too small to notice otherwise. These are allowed to scale the cursor anyway.
|
|
* @param mask Optional pointer to cursor mask containing values from the CursorMaskValue enum.
|
|
*/
|
|
void replaceCursor(const Surface &surf, int hotspotX, int hotspotY, uint32 keycolor, bool dontScale = false, const byte *mask = nullptr);
|
|
|
|
/**
|
|
* Replace the current cursor on the stack.
|
|
*
|
|
* If the stack is empty, the cursor is pushed instead. This is a slightly
|
|
* more optimized way of popping the old cursor before pushing the new one.
|
|
*
|
|
* @param cursor New cursor.
|
|
*/
|
|
void replaceCursor(const Graphics::Cursor *cursor);
|
|
|
|
/**
|
|
* Pop all cursors and cursor palettes from their respective stacks.
|
|
*
|
|
* The purpose is to ensure that all unnecessary cursors are removed from the
|
|
* stack when returning to the launcher from an engine.
|
|
*
|
|
*/
|
|
void popAllCursors();
|
|
|
|
/**
|
|
* Test whether cursor palettes are supported.
|
|
*
|
|
* This is just a convenience wrapper for checking whether
|
|
* OSystem::kFeatureCursorPalette is supported by OSystem.
|
|
*
|
|
* @see OSystem::kFeatureCursorPalette
|
|
* @see OSystem::hasFeature
|
|
*/
|
|
bool supportsCursorPalettes();
|
|
|
|
/**
|
|
* Enable or disable the current cursor palette.
|
|
*
|
|
* @param disable
|
|
*/
|
|
void disableCursorPalette(bool disable);
|
|
|
|
/**
|
|
* Push a new cursor palette onto the stack, and set it in the backend.
|
|
*
|
|
* The palette entries from @p start until @c (start+num-1) will be replaced
|
|
* so a full palette update is accomplished via start=0, num=256.
|
|
*
|
|
* The palette data is specified in the same interleaved RGB format as
|
|
* used by all backends.
|
|
*
|
|
* @param colors New palette data, in interleaved RGB format.
|
|
* @param start First palette entry to be updated.
|
|
* @param num Number of palette entries to be updated.
|
|
*
|
|
* @note If num is zero, the cursor palette is disabled.
|
|
*/
|
|
void pushCursorPalette(const byte *colors, uint start, uint num);
|
|
|
|
/**
|
|
* Pop a cursor palette from the stack, and restore the previous one to
|
|
* the backend.
|
|
*
|
|
* If there is no previous palette, the cursor palette is disabled instead.
|
|
*/
|
|
void popCursorPalette();
|
|
|
|
/**
|
|
* Replace the current cursor palette on the stack.
|
|
*
|
|
* If the stack is empty, the palette is pushed instead. This is a slightly
|
|
* more optimized way of popping the old palette before pushing the new one.
|
|
*
|
|
* @param colors New palette data, in interleaved RGB format.
|
|
* @param start First palette entry to be updated.
|
|
* @param num Number of palette entries to be updated.
|
|
*
|
|
* @note If num is zero, the cursor palette is disabled.
|
|
*/
|
|
void replaceCursorPalette(const byte *colors, uint start, uint num);
|
|
|
|
/**
|
|
* Lock or unlock the visibility state of the cursor.
|
|
*
|
|
* When the cursor is locked, calling showMouse(bool) does nothing
|
|
* and returns false.
|
|
*/
|
|
void lock(bool locked);
|
|
private:
|
|
/**
|
|
* Generic class for implementing the singleton design pattern.
|
|
*/
|
|
friend class Common::Singleton<SingletonBaseType>;
|
|
// Even though this is basically the default constructor we implement it
|
|
// ourselves, so it is private and thus there is no way to create this class
|
|
// except from the Singleton code.
|
|
CursorManager() {
|
|
_locked = false;
|
|
}
|
|
~CursorManager();
|
|
|
|
struct Cursor {
|
|
Surface _surf;
|
|
byte *_mask;
|
|
bool _visible;
|
|
int _hotspotX;
|
|
int _hotspotY;
|
|
uint32 _keycolor;
|
|
bool _dontScale;
|
|
|
|
uint _size;
|
|
|
|
// _surf set to default by Graphics::Surface default constructor
|
|
Cursor() : _mask(0), _visible(false), _hotspotX(0), _hotspotY(0), _keycolor(0), _dontScale(false), _size(0) {}
|
|
|
|
Cursor(const Surface &surf, int hotspotX, int hotspotY, uint32 keycolor, bool dontScale, const byte *mask);
|
|
~Cursor();
|
|
};
|
|
|
|
struct Palette {
|
|
byte *_data;
|
|
uint _start;
|
|
uint _num;
|
|
uint _size;
|
|
|
|
bool _disabled;
|
|
|
|
Palette() : _data(0), _start(0), _num(0), _size(0), _disabled(false) {}
|
|
|
|
Palette(const byte *colors, uint start, uint num);
|
|
~Palette();
|
|
};
|
|
Common::Stack<Cursor *> _cursorStack;
|
|
Common::Stack<Palette *> _cursorPaletteStack;
|
|
bool _locked;
|
|
};
|
|
/** @} */
|
|
} // End of namespace Graphics
|
|
|
|
#define CursorMan (::Graphics::CursorManager::instance())
|
|
|
|
#endif
|