mirror of
https://github.com/aseprite/aseprite.git
synced 2024-10-05 22:39:47 +00:00
dbf4d0d490
- Replaced Widget::rc -> Widget::m_bounds private member. - Added Widget::offsetWidgets() method. - Removed View::displaceWidgets().
266 lines
6.0 KiB
C++
266 lines
6.0 KiB
C++
// Aseprite UI Library
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// Copyright (C) 2001-2013 David Capello
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//
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// This source file is distributed under MIT license,
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// please read LICENSE.txt for more information.
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gfx/size.h"
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#include "ui/intern.h"
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#include "ui/message.h"
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#include "ui/preferred_size_event.h"
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#include "ui/resize_event.h"
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#include "ui/system.h"
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#include "ui/theme.h"
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#include "ui/view.h"
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#include "ui/widget.h"
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#define BAR_SIZE getTheme()->scrollbar_size
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namespace ui {
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using namespace gfx;
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View::View()
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: Widget(kViewWidget)
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, m_scrollbar_h(JI_HORIZONTAL)
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, m_scrollbar_v(JI_VERTICAL)
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{
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m_hasBars = true;
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this->setFocusStop(true);
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addChild(&m_viewport);
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setScrollableSize(Size(0, 0));
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initTheme();
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}
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bool View::hasScrollBars()
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{
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return m_hasBars;
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}
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void View::attachToView(Widget* viewable_widget)
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{
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m_viewport.addChild(viewable_widget);
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}
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void View::makeVisibleAllScrollableArea()
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{
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Size reqSize = m_viewport.calculateNeededSize();
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this->min_w =
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+ this->border_width.l
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+ m_viewport.border_width.l
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+ reqSize.w
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+ m_viewport.border_width.r
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+ this->border_width.r;
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this->min_h =
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+ this->border_width.t
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+ m_viewport.border_width.t
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+ reqSize.h
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+ m_viewport.border_width.b
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+ this->border_width.b;
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}
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void View::hideScrollBars()
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{
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m_hasBars = false;
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updateView();
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}
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Size View::getScrollableSize()
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{
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return Size(m_scrollbar_h.getSize(),
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m_scrollbar_v.getSize());
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}
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void View::setScrollableSize(const Size& sz)
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{
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#define CHECK(w, h, l, t, r, b) \
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((sz.w > (m_viewport.getBounds().w \
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- m_viewport.border_width.l \
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- m_viewport.border_width.r)) && \
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(BAR_SIZE < pos.w) && (BAR_SIZE < pos.h))
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m_scrollbar_h.setSize(sz.w);
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m_scrollbar_v.setSize(sz.h);
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gfx::Rect pos = getChildrenBounds();
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// Setup scroll-bars
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removeChild(&m_scrollbar_h);
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removeChild(&m_scrollbar_v);
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if (m_hasBars) {
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if (CHECK(w, h, l, t, r, b)) {
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pos.h -= BAR_SIZE;
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addChild(&m_scrollbar_h);
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if (CHECK(h, w, t, l, b, r)) {
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pos.w -= BAR_SIZE;
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if (CHECK(w, h, l, t, r, b))
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addChild(&m_scrollbar_v);
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else {
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pos.w += BAR_SIZE;
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pos.h += BAR_SIZE;
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removeChild(&m_scrollbar_h);
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}
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}
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}
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else if (CHECK(h, w, t, l, b, r)) {
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pos.w -= BAR_SIZE;
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addChild(&m_scrollbar_v);
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if (CHECK(w, h, l, t, r, b)) {
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pos.h -= BAR_SIZE;
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if (CHECK(h, w, t, l, b, r))
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addChild(&m_scrollbar_h);
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else {
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pos.w += BAR_SIZE;
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pos.h += BAR_SIZE;
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removeChild(&m_scrollbar_v);
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}
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}
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}
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if (hasChild(&m_scrollbar_h)) {
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m_scrollbar_h.setBounds(gfx::Rect(pos.x, pos.y2(), pos.w, BAR_SIZE));
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m_scrollbar_h.setVisible(true);
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}
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else
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m_scrollbar_h.setVisible(false);
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if (hasChild(&m_scrollbar_v)) {
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m_scrollbar_v.setBounds(gfx::Rect(pos.x2(), pos.y, BAR_SIZE, pos.h));
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m_scrollbar_v.setVisible(true);
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}
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else
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m_scrollbar_v.setVisible(false);
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}
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// Setup viewport
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invalidate();
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m_viewport.setBounds(pos);
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setViewScroll(getViewScroll()); // Setup the same scroll-point
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}
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Size View::getVisibleSize()
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{
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return Size(m_viewport.getBounds().w - m_viewport.border_width.l - m_viewport.border_width.r,
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m_viewport.getBounds().h - m_viewport.border_width.t - m_viewport.border_width.b);
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}
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Point View::getViewScroll()
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{
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return Point(m_scrollbar_h.getPos(),
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m_scrollbar_v.getPos());
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}
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void View::setViewScroll(const Point& pt)
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{
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Point oldScroll = getViewScroll();
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Size maxsize = getScrollableSize();
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Size visible = getVisibleSize();
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Point newScroll(MID(0, pt.x, MAX(0, maxsize.w - visible.w)),
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MID(0, pt.y, MAX(0, maxsize.h - visible.h)));
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if (newScroll == oldScroll)
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return;
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m_scrollbar_h.setPos(newScroll.x);
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m_scrollbar_v.setPos(newScroll.y);
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m_viewport.layout();
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}
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void View::updateView()
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{
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Widget* vw = UI_FIRST_WIDGET(m_viewport.getChildren());
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Point scroll = getViewScroll();
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// Set minimum (remove scroll-bars)
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setScrollableSize(Size(0, 0));
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// Set needed size
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setScrollableSize(m_viewport.calculateNeededSize());
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// If there are scroll-bars, we have to setup the scrollable-size
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// again (because they remove visible space, maybe now we need a
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// vertical or horizontal bar too).
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if (hasChild(&m_scrollbar_h) || hasChild(&m_scrollbar_v))
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setScrollableSize(m_viewport.calculateNeededSize());
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if (vw)
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setViewScroll(scroll);
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else
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setViewScroll(Point(0, 0));
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}
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Viewport* View::getViewport()
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{
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return &m_viewport;
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}
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Rect View::getViewportBounds()
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{
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return m_viewport.getBounds() - m_viewport.getBorder();
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}
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// static
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View* View::getView(Widget* widget)
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{
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if ((widget->getParent()) &&
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(widget->getParent()->type == kViewViewportWidget) &&
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(widget->getParent()->getParent()) &&
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(widget->getParent()->getParent()->type == kViewWidget))
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return static_cast<View*>(widget->getParent()->getParent());
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else
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return 0;
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}
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bool View::onProcessMessage(Message* msg)
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{
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switch (msg->type()) {
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case kFocusEnterMessage:
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case kFocusLeaveMessage:
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// TODO This is theme specific stuff
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// Redraw the borders each time the focus enters or leaves the view.
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{
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Region region;
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getDrawableRegion(region, kCutTopWindows);
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invalidateRegion(region);
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}
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break;
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}
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return Widget::onProcessMessage(msg);
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}
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void View::onResize(ResizeEvent& ev)
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{
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setBoundsQuietly(ev.getBounds());
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updateView();
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}
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void View::onPreferredSize(PreferredSizeEvent& ev)
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{
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Size viewSize = m_viewport.getPreferredSize();
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viewSize.w += this->border_width.l + this->border_width.r;
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viewSize.h += this->border_width.t + this->border_width.b;
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ev.setPreferredSize(viewSize);
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}
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void View::onPaint(PaintEvent& ev)
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{
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getTheme()->paintView(ev);
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}
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} // namespace ui
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