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https://github.com/libretro/scummvm.git
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48faae426a
This reflects its purpose better, so the user code will be more logical
469 lines
14 KiB
C++
469 lines
14 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "common/util.h"
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#include "common/system.h"
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#include "gui/gui-manager.h"
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#include "gui/widget.h"
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#include "gui/ThemeEval.h"
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#include "gui/ThemeLayout.h"
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#include "graphics/font.h"
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#ifdef LAYOUT_DEBUG_DIALOG
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#include "graphics/surface.h"
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#endif
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namespace GUI {
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void ThemeLayout::importLayout(ThemeLayout *layout) {
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assert(layout->getLayoutType() == kLayoutMain);
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if (layout->_children.size() == 0)
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return;
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layout = layout->_children[0];
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if (getLayoutType() == layout->getLayoutType()) {
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for (uint i = 0; i < layout->_children.size(); ++i)
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_children.push_back(layout->_children[i]->makeClone(this));
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} else {
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ThemeLayout *clone = layout->makeClone(this);
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// When importing a layout into a layout of the same type, the children
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// of the imported layout are copied over, ignoring the padding of the
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// imported layout. Here when importing a layout of a different type
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// into a layout we explicitly ignore the padding so the appearance
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// is the same in both cases.
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clone->setPadding(0, 0, 0, 0);
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_children.push_back(clone);
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}
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}
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void ThemeLayout::resetLayout() {
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_x = 0;
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_y = 0;
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_w = _defaultW;
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_h = _defaultH;
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for (uint i = 0; i < _children.size(); ++i)
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_children[i]->resetLayout();
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}
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bool ThemeLayout::getWidgetData(const Common::String &name, int16 &x, int16 &y, int16 &w, int16 &h, bool &useRTL) {
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if (name.empty()) {
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assert(getLayoutType() == kLayoutMain);
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x = _x; y = _y;
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w = _w; h = _h;
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useRTL = _useRTL;
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return true;
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}
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for (uint i = 0; i < _children.size(); ++i) {
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if (_children[i]->getWidgetData(name, x, y, w, h, useRTL))
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return true;
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}
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return false;
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}
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Graphics::TextAlign ThemeLayout::getWidgetTextHAlign(const Common::String &name) {
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if (name.empty()) {
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assert(getLayoutType() == kLayoutMain);
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return _textHAlign;
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}
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Graphics::TextAlign res;
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for (uint i = 0; i < _children.size(); ++i) {
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if ((res = _children[i]->getWidgetTextHAlign(name)) != Graphics::kTextAlignInvalid)
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return res;
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}
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return Graphics::kTextAlignInvalid;
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}
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int16 ThemeLayoutStacked::getParentWidth() {
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ThemeLayout *p = _parent;
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int width = 0;
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while (p && p->getLayoutType() != kLayoutMain) {
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width += p->_padding.right + p->_padding.left;
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if (p->getLayoutType() == kLayoutHorizontal) {
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const int spacing = ((ThemeLayoutStacked *)p)->_spacing;
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for (uint i = 0; i < p->_children.size(); ++i)
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width += p->_children[i]->getWidth() + spacing;
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}
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// FIXME: Do we really want to assume that any layout type different
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// from kLayoutHorizontal corresponds to width 0 ?
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p = p->_parent;
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}
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assert(p && p->getLayoutType() == kLayoutMain);
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return p->getWidth() - width;
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}
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int16 ThemeLayoutStacked::getParentHeight() {
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ThemeLayout *p = _parent;
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int height = 0;
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while (p && p->getLayoutType() != kLayoutMain) {
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height += p->_padding.bottom + p->_padding.top;
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if (p->getLayoutType() == kLayoutVertical) {
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const int spacing = ((ThemeLayoutStacked *)p)->_spacing;
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for (uint i = 0; i < p->_children.size(); ++i)
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height += p->_children[i]->getHeight() + spacing;
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}
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// FIXME: Do we really want to assume that any layout type different
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// from kLayoutVertical corresponds to height 0 ?
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p = p->_parent;
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}
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assert(p && p->getLayoutType() == kLayoutMain);
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return p->getHeight() - height;
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}
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#ifdef LAYOUT_DEBUG_DIALOG
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void ThemeLayout::debugDraw(Graphics::Surface *screen, const Graphics::Font *font) {
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uint32 color = 0xFFFFFFFF;
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font->drawString(screen, getName(), _x, _y, _w, color, Graphics::kTextAlignRight, 0, true);
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screen->hLine(_x, _y, _x + _w, color);
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screen->hLine(_x, _y + _h, _x + _w , color);
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screen->vLine(_x, _y, _y + _h, color);
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screen->vLine(_x + _w, _y, _y + _h, color);
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for (uint i = 0; i < _children.size(); ++i)
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_children[i]->debugDraw(screen, font);
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}
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#endif
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bool ThemeLayoutWidget::getWidgetData(const Common::String &name, int16 &x, int16 &y, int16 &w, int16 &h, bool &useRTL) {
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if (name == _name) {
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x = _x; y = _y;
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w = _w; h = _h;
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useRTL = _useRTL;
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return true;
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}
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return false;
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}
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Graphics::TextAlign ThemeLayoutWidget::getWidgetTextHAlign(const Common::String &name) {
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if (name == _name) {
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return _textHAlign;
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}
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return Graphics::kTextAlignInvalid;
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}
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void ThemeLayoutWidget::reflowLayout(Widget *widgetChain) {
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Widget *guiWidget = getWidget(widgetChain);
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if (!guiWidget) {
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return;
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}
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int minWidth = -1;
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int minHeight = -1;
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guiWidget->getMinSize(minWidth, minHeight);
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if (_w != -1 && minWidth != -1 && minWidth > _w) {
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_w = minWidth;
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}
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if (_h != -1 && minHeight != -1 && minHeight > _h) {
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_h = minHeight;
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}
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}
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bool ThemeLayoutWidget::isBound(Widget *widgetChain) const {
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Widget *guiWidget = getWidget(widgetChain);
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return guiWidget != nullptr;
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}
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Widget *ThemeLayoutWidget::getWidget(Widget *widgetChain) const {
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const ThemeLayout *topLevelLayout = this;
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while (topLevelLayout->_parent) {
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topLevelLayout = topLevelLayout->_parent;
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}
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assert(topLevelLayout && topLevelLayout->getLayoutType() == kLayoutMain);
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const ThemeLayoutMain *dialogLayout = static_cast<const ThemeLayoutMain *>(topLevelLayout);
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Common::String widgetName = Common::String::format("%s.%s", dialogLayout->getName(), _name.c_str());
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return Widget::findWidgetInChain(widgetChain, widgetName.c_str());
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}
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void ThemeLayoutMain::reflowLayout(Widget *widgetChain) {
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assert(_children.size() <= 1);
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resetLayout();
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if (_overlays == "screen") {
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_x = 0;
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_y = 0;
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_w = g_gui.getGUIWidth() * g_gui.getScaleFactor();
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_h = g_gui.getGUIHeight() * g_gui.getScaleFactor();
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} else if (_overlays == "screen_center") {
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_x = -1;
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_y = -1;
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_w = _defaultW > 0 ? MIN(_defaultW, g_gui.getGUIWidth()) * g_gui.getScaleFactor() : -1;
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_h = _defaultH > 0 ? MIN(_defaultH, g_gui.getGUIHeight()) * g_gui.getScaleFactor() : -1;
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} else {
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if (!g_gui.xmlEval()->getWidgetData(_overlays, _x, _y, _w, _h)) {
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warning("Unable to retrieve overlayed dialog position %s", _overlays.c_str());
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}
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if (_w == -1 || _h == -1) {
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warning("The overlayed dialog %s has not been sized, using a default size for %s", _overlays.c_str(), _name.c_str());
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_x = g_gui.getGUIWidth() / 10 * g_gui.getScaleFactor();
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_y = g_gui.getGUIHeight() / 10 * g_gui.getScaleFactor();
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_w = g_gui.getGUIWidth() * 8 / 10 * g_gui.getScaleFactor();
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_h = g_gui.getGUIHeight() * 8 / 10 * g_gui.getScaleFactor();
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}
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}
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if (g_gui.useRTL()) {
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if (this->_name == "GameOptions" || this->_name == "GlobalOptions" || this->_name == "Browser") {
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/** The dialogs named above are the stacked dialogs for which the left+right paddings need to be adjusted for RTL.
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Whenever a stacked dialog is opened, the below code sets the left and right paddings and enables widgets to be
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shifted by that amount. If any new stacked and padded dialogs are added in the future,
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add them here and in Widget::draw() to enable RTL support for that particular dialog
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*/
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int oldX = _x;
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_x = g_gui.getGUIWidth() * g_gui.getScaleFactor() - _w - _x;
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g_gui.setDialogPaddings(oldX, _x);
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}
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}
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if (_x >= 0) _x += _inset * g_gui.getScaleFactor();
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if (_y >= 0) _y += _inset * g_gui.getScaleFactor();
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if (_w >= 0) _w -= 2 * _inset * g_gui.getScaleFactor();
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if (_h >= 0) _h -= 2 * _inset * g_gui.getScaleFactor();
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if (_children.size()) {
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_children[0]->setWidth(_w);
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_children[0]->setHeight(_h);
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_children[0]->reflowLayout(widgetChain);
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if (_w == -1)
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_w = _children[0]->getWidth();
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if (_h == -1)
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_h = _children[0]->getHeight();
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if (_y == -1)
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_y = (g_system->getOverlayHeight() >> 1) - (_h >> 1);
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if (_x == -1)
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_x = (g_system->getOverlayWidth() >> 1) - (_w >> 1);
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}
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}
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void ThemeLayoutStacked::reflowLayoutVertical(Widget *widgetChain) {
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int curY;
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int resize[8];
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int rescount = 0;
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bool fixedWidth = _w != -1;
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curY = _padding.top;
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_h = _padding.top + _padding.bottom;
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for (uint i = 0; i < _children.size(); ++i) {
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if (!_children[i]->isBound(widgetChain)) continue;
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_children[i]->reflowLayout(widgetChain);
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if (_children[i]->getWidth() == -1) {
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int16 width = (_w == -1 ? getParentWidth() : _w) - _padding.left - _padding.right;
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_children[i]->setWidth(MAX<int16>(width, 0));
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}
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if (_children[i]->getHeight() == -1) {
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assert(rescount < ARRAYSIZE(resize));
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resize[rescount++] = i;
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_children[i]->setHeight(0);
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}
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_children[i]->offsetY(curY);
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// Advance the vertical offset by the height of the newest item, plus
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// the item spacing value.
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curY += _children[i]->getHeight() + _spacing;
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// Update width and height of this stack layout
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if (!fixedWidth) {
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_w = MAX(_w, (int16)(_children[i]->getWidth() + _padding.left + _padding.right));
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}
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_h += _children[i]->getHeight() + _spacing;
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}
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// If there are any children at all, then we added the spacing value once
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// too often. Correct that.
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if (!_children.empty())
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_h -= _spacing;
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// If the width is not set at this point, then we have no bound widgets.
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if (!fixedWidth && _w == -1) {
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_w = 0;
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}
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for (uint i = 0; i < _children.size(); ++i) {
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switch (_itemAlign) {
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case kItemAlignStart:
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default:
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_children[i]->offsetX(_padding.left);
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break;
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case kItemAlignCenter:
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// Center child if it this has been requested *and* the space permits it.
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if (_children[i]->getWidth() < (_w - _padding.left - _padding.right)) {
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_children[i]->offsetX((_w >> 1) - (_children[i]->getWidth() >> 1));
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} else {
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_children[i]->offsetX(_padding.left);
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}
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break;
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case kItemAlignEnd:
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_children[i]->offsetX(_w - _children[i]->getWidth() - _padding.right);
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break;
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case kItemAlignStretch:
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_children[i]->offsetX(_padding.left);
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_children[i]->setWidth(_w - _padding.left - _padding.right);
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break;
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}
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}
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// If there were any items with undetermined height, then compute and set
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// their height now. We do so by determining how much space is left, and
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// then distributing this equally over all items which need auto-resizing.
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if (rescount) {
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int newh = (getParentHeight() - _h - _padding.bottom) / rescount;
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if (newh < 0) newh = 0; // In case there is no room left, avoid giving a negative height to widgets
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for (int i = 0; i < rescount; ++i) {
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// Set the height of the item.
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_children[resize[i]]->setHeight(newh);
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// Increase the height of this ThemeLayoutStacked accordingly, and
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// then shift all subsequence children.
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_h += newh;
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for (uint j = resize[i] + 1; j < _children.size(); ++j)
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_children[j]->offsetY(newh);
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}
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}
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}
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void ThemeLayoutStacked::reflowLayoutHorizontal(Widget *widgetChain) {
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int curX;
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int resize[8];
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int rescount = 0;
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bool fixedHeight = _h != -1;
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curX = _padding.left;
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_w = _padding.left + _padding.right;
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for (uint i = 0; i < _children.size(); ++i) {
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if (!_children[i]->isBound(widgetChain)) continue;
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_children[i]->reflowLayout(widgetChain);
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if (_children[i]->getHeight() == -1) {
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int16 height = (_h == -1 ? getParentHeight() : _h) - _padding.top - _padding.bottom;
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_children[i]->setHeight(MAX<int16>(height, 0));
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}
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if (_children[i]->getWidth() == -1) {
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assert(rescount < ARRAYSIZE(resize));
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resize[rescount++] = i;
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_children[i]->setWidth(0);
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}
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_children[i]->offsetX(curX);
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// Advance the horizontal offset by the width of the newest item, plus
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// the item spacing value.
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curX += (_children[i]->getWidth() + _spacing);
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// Update width and height of this stack layout
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_w += _children[i]->getWidth() + _spacing;
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if (!fixedHeight) {
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_h = MAX(_h, (int16)(_children[i]->getHeight() + _padding.top + _padding.bottom));
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}
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}
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// If there are any children at all, then we added the spacing value once
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// too often. Correct that.
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if (!_children.empty())
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_w -= _spacing;
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// If the height is not set at this point, then we have no bound widgets.
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if (!fixedHeight && _h == -1) {
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_h = 0;
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}
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for (uint i = 0; i < _children.size(); ++i) {
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switch (_itemAlign) {
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case kItemAlignStart:
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default:
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_children[i]->offsetY(_padding.top);
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break;
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case kItemAlignCenter:
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// Center child if it this has been requested *and* the space permits it.
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if (_children[i]->getHeight() < (_h - _padding.top - _padding.bottom)) {
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_children[i]->offsetY((_h >> 1) - (_children[i]->getHeight() >> 1));
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} else {
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_children[i]->offsetY(_padding.top);
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}
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break;
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case kItemAlignEnd:
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_children[i]->offsetY(_h - _children[i]->getHeight() - _padding.bottom);
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break;
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case kItemAlignStretch:
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_children[i]->offsetY(_padding.top);
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_children[i]->setHeight(_w - _padding.top - _padding.bottom);
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break;
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}
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}
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// If there were any items with undetermined width, then compute and set
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// their width now. We do so by determining how much space is left, and
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// then distributing this equally over all items which need auto-resizing.
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if (rescount) {
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int neww = (getParentWidth() - _w - _padding.right) / rescount;
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if (neww < 0) neww = 0; // In case there is no room left, avoid giving a negative width to widgets
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for (int i = 0; i < rescount; ++i) {
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// Set the width of the item.
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_children[resize[i]]->setWidth(neww);
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// Increase the width of this ThemeLayoutStacked accordingly, and
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// then shift all subsequence children.
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_w += neww;
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for (uint j = resize[i] + 1; j < _children.size(); ++j)
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_children[j]->offsetX(neww);
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}
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}
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}
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} // End of namespace GUI
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