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Diffstat (limited to 'backends/vkeybd/virtual-keyboard-gui.h')
| -rw-r--r-- | backends/vkeybd/virtual-keyboard-gui.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/backends/vkeybd/virtual-keyboard-gui.h b/backends/vkeybd/virtual-keyboard-gui.h new file mode 100644 index 0000000000..e99d552479 --- /dev/null +++ b/backends/vkeybd/virtual-keyboard-gui.h @@ -0,0 +1,153 @@ +/* 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. +* +* $URL$ +* $Id$ +* +*/ + +#ifndef COMMON_VIRTUAL_KEYBOARD_GUI +#define COMMON_VIRTUAL_KEYBOARD_GUI + +#include "backends/vkeybd/virtual-keyboard.h" +#include "common/rect.h" +#include "common/system.h" +#include "graphics/fontman.h" +#include "graphics/surface-keycolored.h" + +namespace Common { + +/** + * Class to handle the drawing of the virtual keyboard to the overlay, and the + * execution of the keyboard's main loop. + * This includes the blitting of the appropriate bitmap in the correct location, + * as well as the drawing of the virtual keyboard display. + */ +class VirtualKeyboardGUI { + +public: + + VirtualKeyboardGUI(VirtualKeyboard *kbd); + ~VirtualKeyboardGUI(); + + /** + * Updates the GUI when the Mode of the keyboard is changes + */ + void initMode(VirtualKeyboard::Mode *mode); + + /** + * Starts the drawing of the keyboard, and runs the main event loop. + */ + void run(); + + /** + * Interrupts the event loop and resets the overlay to its initial state. + */ + void close(); + + bool isDisplaying() { return _displaying; } + + /** + * Reset the class to an initial state + */ + void reset(); + + /** + * Activates drag mode. Takes the keyboard-relative coordinates of the + * cursor as an argument. + */ + void startDrag(int16 x, int16 y); + + /** + * Deactivates drag mode + * */ + void endDrag(); + + /** + * Checks for a screen change in the backend and re-inits the virtual + * keyboard if it has. + */ + void checkScreenChanged(); + + /** + * Sets the GUI's internal screen size variables + */ + void initSize(int16 w, int16 h); + +private: + + OSystem *_system; + + VirtualKeyboard *_kbd; + Rect _kbdBound; + Graphics::Surface *_kbdSurface; + OverlayColor _kbdTransparentColor; + + Point _dragPoint; + bool _drag; + static const int SNAP_WIDTH = 10; + + Graphics::Surface _overlayBackup; + Rect _dirtyRect; + + bool _displayEnabled; + Graphics::Surface _dispSurface; + const Graphics::Font *_dispFont; + int16 _dispX, _dispY; + uint _dispI; + OverlayColor _dispForeColor, _dispBackColor; + + int _lastScreenChanged; + int16 _screenW, _screenH; + + bool _displaying; + bool _firstRun; + + void setupDisplayArea(Rect& r, OverlayColor forecolor); + void move(int16 x, int16 y); + void moveToDefaultPosition(); + void screenChanged(); + void mainLoop(); + void extendDirtyRect(const Rect &r); + void resetDirtyRect(); + void redraw(); + void forceRedraw(); + void updateDisplay(); + bool fontIsSuitable(const Graphics::Font *font, const Rect& rect); + uint calculateEndIndex(const String& str, uint startIndex); + + bool _drawCaret; + int16 _caretX; + static const int kCaretBlinkTime = 500; + void animateCaret(); + + static const int kCursorAnimateDelay = 250; + int _cursorAnimateCounter; + int _cursorAnimateTimer; + byte _cursor[2048]; + void setupCursor(); + void removeCursor(); + void animateCursor(); + +}; + +} // end of namespace Common + +#endif |