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Diffstat (limited to 'dggui/tabwidget.cc')
| -rw-r--r-- | dggui/tabwidget.cc | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/dggui/tabwidget.cc b/dggui/tabwidget.cc new file mode 100644 index 0000000..635f1bd --- /dev/null +++ b/dggui/tabwidget.cc @@ -0,0 +1,214 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * tabwidget.cc + * + * Thu Nov 24 17:46:22 CET 2016 + * Copyright 2016 Bent Bisballe Nyeng + * deva@aasimon.org + ****************************************************************************/ + +/* + * This file is part of DrumGizmo. + * + * DrumGizmo is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * DrumGizmo 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with DrumGizmo; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + */ +#include "tabwidget.h" + +#include "painter.h" + +namespace GUI +{ + +TabWidget::TabWidget(Widget *parent) + : Widget(parent) + , stack(this) +{ + CONNECT(this, sizeChangeNotifier, this, &TabWidget::sizeChanged); + CONNECT(&stack, currentChanged, this, &TabWidget::setActiveButtons); +} + +TabID TabWidget::addTab(const std::string& title, Widget* widget) +{ + buttons.emplace_back(this, widget); + auto& button = buttons.back(); + button.setText(title); + stack.addWidget(widget); + CONNECT(&button, switchTabNotifier, this, &TabWidget::switchTab); + CONNECT(&button, scrollNotifier, this, &TabWidget::rotateTab); + sizeChanged(width(), height()); + return button.getID(); +} + +void TabWidget::setTabWidth(std::size_t width) +{ + tab_width = width; + relayout(); +} + +std::size_t TabWidget::getTabWidth() const +{ + return tab_width; +} + +void TabWidget::setVisible(TabID tab_id, bool visible) +{ + for (auto& button : buttons) + { + if(button.getID() == tab_id) + { + button.setVisible(visible); + relayout(); + return; + } + } +} + +std::size_t TabWidget::getBarHeight() const +{ + return topbar.height(); +} + +void TabWidget::rotateTab(float delta) +{ + Widget* widget{nullptr}; + Widget* current = stack.getCurrentWidget(); + if(delta > 0.0f) + { + while((widget = stack.getWidgetAfter(current)) != nullptr) + { + auto button = getButtonFromWidget(widget); + if(!button || !button->visible()) + { + current = widget; + continue; + } + break; + } + } + else + { + while((widget = stack.getWidgetBefore(current)) != nullptr) + { + auto button = getButtonFromWidget(widget); + if(!button || !button->visible()) + { + current = widget; + continue; + } + break; + } + } + + if(widget) + { + switchTab(widget); + } +} + +void TabWidget::switchTab(Widget* tab_widget) +{ + stack.setCurrentWidget(tab_widget); +} + +void TabWidget::setActiveButtons(Widget* current_widget) +{ + for (auto& button : buttons) { + if (button.getTabWidget() == current_widget) { + button.setActive(true); + } + else + { + button.setActive(false); + } + } +} + +void TabWidget::sizeChanged(int width, int height) +{ + std::size_t pos = 0; + + int button_width = tab_width; + int bar_height = 25; + int button_border_width = 10; + + int button_padding_left = 25; + int button_padding_inner = 3; + int logo_padding_right = button_padding_left / 2; + + Painter p(*this); + + if(buttons.size() > 0) + { + for(auto& button : buttons) + { + if(!button.visible()) + { + continue; + } + int min_width = button.getMinimalWidth(); + button_width = std::max(button_width, min_width + button_border_width); + } + + button_width = std::min(button_width, width / (int)buttons.size()); + } + + // draw the upper bar + topbar.setSize(width, bar_height); + p.drawImage(0, 0, topbar); + auto x_logo = width - toplogo.width() - logo_padding_right; + auto y_logo = (bar_height - toplogo.height()) / 2; + p.drawImage(x_logo, y_logo, toplogo); + + // place the buttons + pos = button_padding_left; + for(auto& button : buttons) + { + if(!button.visible()) + { + continue; + } + button.resize(button_width, bar_height); + button.move(pos, 0); + pos += button_width + button_padding_inner; + } + + stack.move(0, bar_height); + stack.resize(width, std::max((int)height - bar_height, 0)); +} + +void TabWidget::relayout() +{ + sizeChanged(TabWidget::width(), TabWidget::height()); // Force re-layout +} + +const TabButton* TabWidget::getButtonFromWidget(const Widget* tab_widget) +{ + if(tab_widget == nullptr) + { + return nullptr; + } + + for(auto& button : buttons) + { + if(button.getTabWidget() == tab_widget) + { + return &button; + } + } + + return nullptr; +} + +} // GUI:: |