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Diffstat (limited to 'engines/bladerunner/ui/ui_slider.cpp')
| -rw-r--r-- | engines/bladerunner/ui/ui_slider.cpp | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/engines/bladerunner/ui/ui_slider.cpp b/engines/bladerunner/ui/ui_slider.cpp new file mode 100644 index 0000000000..d25b7fac2c --- /dev/null +++ b/engines/bladerunner/ui/ui_slider.cpp @@ -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. + * + */ + +#include "bladerunner/ui/ui_slider.h" + +#include "bladerunner/audio_player.h" +#include "bladerunner/bladerunner.h" +#include "bladerunner/game_info.h" + +namespace BladeRunner { + +const uint16 UISlider::kColors[] = { 0x0000, 0x0821, 0x1061, 0x1C82, 0x24C2, 0x2CE3, 0x3524, 0x4145, 0x4586, 0x4DC7, 0x5609, 0x5E4B, 0x668C, 0x6EEE, 0x7730, 0x7B92 }; + +UISlider::UISlider(BladeRunnerEngine *vm, UIComponentCallback *valueChangedCallback, void *callbackData, Common::Rect rect, int maxValue, int value) + : UIComponent(vm) { + + _valueChangedCallback = valueChangedCallback; + _callbackData = callbackData; + + _maxValue = MAX(0, maxValue); + _value = CLIP(value, 0, _maxValue - 1); + + _rect = rect; + _isEnabled = true; + _currentFrameColor = 0; + _hasFocus = false; + _pressedStatus = 0; +} + +void UISlider::draw(Graphics::Surface &surface) { + if (_rect.isEmpty()) { + return; + } + + int frameColor; + if (_pressedStatus == 1) { + frameColor = 10; + } else if (_hasFocus && _pressedStatus != 2 && _isEnabled) { + frameColor = 5; + } else { + frameColor = 0; + } + + if (_currentFrameColor < frameColor) { + ++_currentFrameColor; + } + + if (_currentFrameColor > frameColor) { + --_currentFrameColor; + } + + surface.frameRect(_rect, kColors[_currentFrameColor]); + + int sliderX = 0; + if (_maxValue <= 1) { + sliderX = _rect.left; + } else { + sliderX = _rect.left + ((_value * _rect.width()) / (_maxValue - 1)); + } + + if (_pressedStatus == 1) { + int sliderValue = ((_maxValue - 1) * (_mouseX - _rect.left)) / _rect.width(); + sliderX = _rect.left + ((sliderValue * _rect.width()) / (_maxValue - 1)); + sliderX = CLIP(sliderX, (int)_rect.left, (int)_rect.right); + } + + if (_rect.left + 1 < _rect.right - 1) { + int striding = _rect.left + sliderX; + for (int x = _rect.left + 1; x < _rect.right - 1; x++) { + int colorIndex = 15 - (abs(sliderX - x) >> 2); + + if (!_isEnabled) { + colorIndex /= 2; + } + + if (colorIndex < 3) { + colorIndex = 3; + } + + uint16 color = kColors[colorIndex]; + if ((striding + x) & 1 || x == sliderX) { + color = 0; + } + + surface.vLine(x, _rect.top + 1, _rect.bottom - 2, color); + } + } +} + +void UISlider::handleMouseMove(int mouseX, int mouseY) { + _mouseX = mouseX; + if (_rect.contains(mouseX, mouseY)) { + if (!_hasFocus && _isEnabled && _pressedStatus == 0) { + _vm->_audioPlayer->playAud(_vm->_gameInfo->getSfxTrack(508), 100, 0, 0, 50, 0); + } + _hasFocus = true; + } else { + _hasFocus = false; + } +} + +void UISlider::handleMouseDown(bool alternateButton) { + if (_isEnabled && !alternateButton) { + if (_hasFocus) { + _pressedStatus = 1; + } else { + _pressedStatus = 2; + } + } +} + +void UISlider::handleMouseUp(bool alternateButton) { + if (!alternateButton) { + if (_pressedStatus == 1) { + if (_rect.width() == 0) { + _value = 0; + } else { + _value = ((_maxValue - 1) * (_mouseX - _rect.left)) / _rect.width(); + } + _value = CLIP(_value, 0, _maxValue - 1); + + if (_valueChangedCallback) { + _valueChangedCallback(_callbackData, this); + } + } + _pressedStatus = 0; + } +} + +void UISlider::setValue(int value) { + _value = CLIP(value, 0, _maxValue - 1); +} + +} // End of namespace BladeRunner |