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408 lines
11 KiB
408 lines
11 KiB
/* This file is part of the KDE project
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Copyright (C) 2004 Cedric Pasteur <cedric.pasteur@free.fr>
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Copyright (C) 2004 Jaroslaw Staniek <js@iidea.pl>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "kexiscrollview.h"
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#include <tqcursor.h>
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#include <tqobjectlist.h>
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#include <tqpainter.h>
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#include <tqpixmap.h>
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#include <kdebug.h>
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#include <kstaticdeleter.h>
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#include <tdelocale.h>
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#include <utils/kexirecordnavigator.h>
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#include <core/kexi.h>
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#include <kexiutils/utils.h>
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//! @internal
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class KexiScrollViewData
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{
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public:
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TQPixmap horizontalOuterAreaPixmapBuffer;
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TQPixmap verticalOuterAreaPixmapBuffer;
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};
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// @todo warning: not reentrant!
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static KStaticDeleter<KexiScrollViewData> KexiScrollView_data_deleter;
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KexiScrollViewData* KexiScrollView_data = 0;
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KexiScrollView::KexiScrollView(TQWidget *parent, bool preview)
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: TQScrollView(parent, "kexiscrollview", WStaticContents)
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, m_widget(0)
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, m_helpFont(font())
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, m_preview(preview)
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, m_scrollViewNavPanel(0)
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{
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setFrameStyle(TQFrame::WinPanel | TQFrame::Sunken);
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viewport()->setPaletteBackgroundColor(colorGroup().mid());
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TQColor fc = palette().active().foreground(),
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bc = viewport()->paletteBackgroundColor();
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m_helpColor = KexiUtils::blendedColors(fc, bc, 1, 2);
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// m_helpColor = TQColor((fc.red()+bc.red()*2)/3, (fc.green()+bc.green()*2)/3,
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// (fc.blue()+bc.blue()*2)/3);
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m_helpFont.setPointSize( m_helpFont.pointSize() * 3 );
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setFocusPolicy(TQWidget::WheelFocus);
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//initial resize mode is always manual;
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//will be changed on show(), if needed
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setResizePolicy(Manual);
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viewport()->setMouseTracking(true);
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m_resizing = false;
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m_enableResizing = true;
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m_snapToGrid = false;
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m_gridSize = 0;
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m_outerAreaVisible = true;
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connect(&m_delayedResize, TQ_SIGNAL(timeout()), this, TQ_SLOT(refreshContentsSize()));
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m_smodeSet = false;
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if (m_preview) {
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refreshContentsSizeLater(true, true);
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//! @todo allow to hide navigator
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updateScrollBars();
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m_scrollViewNavPanel = new KexiRecordNavigator(this, leftMargin(), "nav");
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m_scrollViewNavPanel->setSizePolicy(TQSizePolicy::Minimum,TQSizePolicy::Preferred);
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}
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}
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KexiScrollView::~KexiScrollView()
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{
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}
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void
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KexiScrollView::setWidget(TQWidget *w)
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{
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addChild(w);
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m_widget = w;
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}
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void
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KexiScrollView::setRecordNavigatorVisible(bool visible)
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{
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if(/*m_scrollViewNavPanel->isVisible() &&*/ !visible)
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m_scrollViewNavPanel->hide();
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else if(visible) {
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m_scrollViewNavPanel->show();
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updateNavPanelGeometry();
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}
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}
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void
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KexiScrollView::setSnapToGrid(bool enable, int gridSize)
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{
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m_snapToGrid = enable;
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if(enable) {
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m_gridSize = gridSize;
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}
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}
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void
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KexiScrollView::refreshContentsSizeLater(bool horizontal, bool vertical)
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{
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Q_UNUSED( horizontal );
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Q_UNUSED( vertical );
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if (!m_smodeSet) {
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m_smodeSet = true;
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m_vsmode = vScrollBarMode();
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m_hsmode = hScrollBarMode();
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}
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// if (vertical)
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setVScrollBarMode(TQScrollView::AlwaysOff);
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//if (horizontal)
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setHScrollBarMode(TQScrollView::AlwaysOff);
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updateScrollBars();
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m_delayedResize.start( 100, true );
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}
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void
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KexiScrollView::refreshContentsSize()
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{
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if(!m_widget)
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return;
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if (m_preview) {
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resizeContents(m_widget->width(), m_widget->height());
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// kdDebug() << "KexiScrollView::refreshContentsSize(): ( "
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// << m_widget->width() <<", "<< m_widget->height() << endl;
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setVScrollBarMode(m_vsmode);
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setHScrollBarMode(m_hsmode);
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m_smodeSet = false;
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updateScrollBars();
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}
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else {
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// Ensure there is always space to resize Form
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int w = contentsWidth(), h = contentsHeight();
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bool change = false;
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const int delta_x = TQMAX( (KexiScrollView_data ?
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KexiScrollView_data->verticalOuterAreaPixmapBuffer.width() : 0), 300);
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const int delta_y = TQMAX( (KexiScrollView_data ?
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KexiScrollView_data->horizontalOuterAreaPixmapBuffer.height() : 0), 300);
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if((m_widget->width() + delta_x * 2 / 3) > w) {
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w = m_widget->width() + delta_x;
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change = true;
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}
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else if((w - m_widget->width()) > delta_x) {
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w = m_widget->width() + delta_x;
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change = true;
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}
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if((m_widget->height() + delta_y * 2 / 3) > h) {
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h = m_widget->height() + delta_y;
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change = true;
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}
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else if((h - m_widget->height()) > delta_y) {
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h = m_widget->height() + delta_y;
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change = true;
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}
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if (change) {
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repaint();
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viewport()->repaint();
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repaintContents();
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updateContents(0, 0, 2000,2000);
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clipper()->repaint();
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resizeContents(w, h);
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}
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// kdDebug() << "KexiScrollView::refreshContentsSize(): ( "
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// << contentsWidth() <<", "<< contentsHeight() << endl;
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updateScrollBars();
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setVScrollBarMode(Auto);
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setHScrollBarMode(Auto);
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}
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updateContents();
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updateScrollBars();
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}
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void
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KexiScrollView::updateNavPanelGeometry()
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{
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if (m_scrollViewNavPanel)
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m_scrollViewNavPanel->updateGeometry(leftMargin());
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}
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void
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KexiScrollView::contentsMousePressEvent(TQMouseEvent *ev)
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{
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if(!m_widget)
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return;
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TQRect r3(0, 0, m_widget->width() + 4, m_widget->height() + 4);
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if(!r3.contains(ev->pos())) // clicked outside form
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//m_form->resetSelection();
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emit outerAreaClicked();
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if(!m_enableResizing)
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return;
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TQRect r(m_widget->width(), 0, 4, m_widget->height() + 4); // right limit
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TQRect r2(0, m_widget->height(), m_widget->width() + 4, 4); // bottom limit
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if(r.contains(ev->pos()) || r2.contains(ev->pos()))
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{
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m_resizing = true;
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emit resizingStarted();
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}
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}
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void
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KexiScrollView::contentsMouseReleaseEvent(TQMouseEvent *)
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{
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if(m_resizing) {
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m_resizing = false;
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emit resizingEnded();
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}
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unsetCursor();
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}
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void
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KexiScrollView::contentsMouseMoveEvent(TQMouseEvent *ev)
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{
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if(!m_widget || !m_enableResizing)
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return;
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if(m_resizing) // resize widget
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{
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int tmpx = ev->x(), tmpy = ev->y();
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const int exceeds_x = (tmpx - contentsX() + 5) - clipper()->width();
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const int exceeds_y = (tmpy - contentsY() + 5) - clipper()->height();
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if (exceeds_x > 0)
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tmpx -= exceeds_x;
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if (exceeds_y > 0)
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tmpy -= exceeds_y;
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if ((tmpx - contentsX()) < 0)
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tmpx = contentsX();
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if ((tmpy - contentsY()) < 0)
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tmpy = contentsY();
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// we look for the max widget right() (or bottom()), which would be the limit for form resizing (not to hide widgets)
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TQObjectList *list = m_widget->queryList("TQWidget", 0, true, false /* not recursive*/);
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for(TQObject *o = list->first(); o; o = list->next())
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{
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TQWidget *w = (TQWidget*)o;
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tmpx = TQMAX(tmpx, (w->geometry().right() + 10));
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tmpy = TQMAX(tmpy, (w->geometry().bottom() + 10));
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}
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delete list;
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int neww = -1, newh;
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if(cursor().shape() == TQCursor::SizeHorCursor)
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{
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if(m_snapToGrid)
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neww = int( float(tmpx) / float(m_gridSize) + 0.5 ) * m_gridSize;
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else
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neww = tmpx;
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newh = m_widget->height();
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}
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else if(cursor().shape() == TQCursor::SizeVerCursor)
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{
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neww = m_widget->width();
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if(m_snapToGrid)
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newh = int( float(tmpy) / float(m_gridSize) + 0.5 ) * m_gridSize;
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else
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newh = tmpy;
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}
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else if(cursor().shape() == TQCursor::SizeFDiagCursor)
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{
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if(m_snapToGrid) {
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neww = int( float(tmpx) / float(m_gridSize) + 0.5 ) * m_gridSize;
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newh = int( float(tmpy) / float(m_gridSize) + 0.5 ) * m_gridSize;
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} else {
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neww = tmpx;
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newh = tmpy;
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}
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}
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//needs update?
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if (neww!=-1 && m_widget->size() != TQSize(neww, newh)) {
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m_widget->resize( neww, newh );
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refreshContentsSize();
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updateContents();
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}
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}
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else // update mouse cursor
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{
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TQPoint p = ev->pos();
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TQRect r(m_widget->width(), 0, 4, m_widget->height()); // right
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TQRect r2(0, m_widget->height(), m_widget->width(), 4); // bottom
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TQRect r3(m_widget->width(), m_widget->height(), 4, 4); // bottom-right corner
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if(r.contains(p))
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setCursor(TQCursor::SizeHorCursor);
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else if(r2.contains(p))
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setCursor(TQCursor::SizeVerCursor);
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else if(r3.contains(p))
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setCursor(TQCursor::SizeFDiagCursor);
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else
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unsetCursor();
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}
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}
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void
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KexiScrollView::setupPixmapBuffer(TQPixmap& pixmap, const TQString& text, int lines)
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{
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Q_UNUSED( lines );
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TQFontMetrics fm(m_helpFont);
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const int flags = TQt::AlignCenter|TQt::AlignTop;
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TQRect rect(fm.boundingRect(0,0,1000,1000,flags,text));
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const int txtw = rect.width(), txth = rect.height();//fm.width(text), txth = fm.height()*lines;
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pixmap = TQPixmap(txtw, txth);
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if (!pixmap.isNull()) {
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//create pixmap once
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pixmap.fill( viewport()->paletteBackgroundColor() );
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TQPainter pb(&pixmap, this);
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pb.setPen(m_helpColor);
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pb.setFont(m_helpFont);
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pb.drawText(0, 0, txtw, txth, TQt::AlignCenter|TQt::AlignTop, text);
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}
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}
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void
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KexiScrollView::drawContents( TQPainter * p, int clipx, int clipy, int clipw, int cliph )
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{
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TQScrollView::drawContents(p, clipx, clipy, clipw, cliph);
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if (m_widget) {
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if(m_preview || !m_outerAreaVisible)
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return;
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//draw right and bottom borders
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const int wx = childX(m_widget);
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const int wy = childY(m_widget);
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p->setPen(palette().active().foreground());
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p->drawLine(wx+m_widget->width(), wy, wx+m_widget->width(), wy+m_widget->height());
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p->drawLine(wx, wy+m_widget->height(), wx+m_widget->width(), wy+m_widget->height());
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//kdDebug() << "KexiScrollView::drawContents() " << wy+m_widget->height() << endl;
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if (!KexiScrollView_data) {
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KexiScrollView_data_deleter.setObject( KexiScrollView_data, new KexiScrollViewData() );
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//create flicker-less buffer
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setupPixmapBuffer( KexiScrollView_data->horizontalOuterAreaPixmapBuffer, i18n("Outer Area"), 1 );
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setupPixmapBuffer( KexiScrollView_data->verticalOuterAreaPixmapBuffer, i18n("Outer\nArea"), 2 );
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}
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if (!KexiScrollView_data->horizontalOuterAreaPixmapBuffer.isNull()
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&& !KexiScrollView_data->verticalOuterAreaPixmapBuffer.isNull()
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&& !m_delayedResize.isActive() /* only draw text if there's not pending delayed resize*/)
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{
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if (m_widget->height()>(KexiScrollView_data->verticalOuterAreaPixmapBuffer.height()+20)) {
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p->drawPixmap(
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TQMAX( m_widget->width(), KexiScrollView_data->verticalOuterAreaPixmapBuffer.width() + 20 ) + 20,
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TQMAX( (m_widget->height() - KexiScrollView_data->verticalOuterAreaPixmapBuffer.height())/2, 20 ),
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KexiScrollView_data->verticalOuterAreaPixmapBuffer
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);
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}
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p->drawPixmap(
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TQMAX( (m_widget->width() - KexiScrollView_data->horizontalOuterAreaPixmapBuffer.width())/2, 20 ),
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TQMAX( m_widget->height(), KexiScrollView_data->horizontalOuterAreaPixmapBuffer.height() + 20 ) + 20,
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KexiScrollView_data->horizontalOuterAreaPixmapBuffer
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);
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}
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}
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}
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void
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KexiScrollView::leaveEvent( TQEvent *e )
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{
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TQWidget::leaveEvent(e);
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m_widget->update(); //update form elements on too fast mouse move
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}
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void
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KexiScrollView::setHBarGeometry( TQScrollBar & hbar, int x, int y, int w, int h )
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{
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/*todo*/
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// kdDebug(44021)<<"KexiScrollView::setHBarGeometry"<<endl;
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if (m_scrollViewNavPanel && m_scrollViewNavPanel->isVisible()) {
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m_scrollViewNavPanel->setHBarGeometry( hbar, x, y, w, h );
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}
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else {
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hbar.setGeometry( x, y, w, h );
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}
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}
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KexiRecordNavigator*
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KexiScrollView::recordNavigator() const
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{
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return m_scrollViewNavPanel;
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}
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#include "kexiscrollview.moc"
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