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GUI: implemented scrolling in the overview mode

This commit is contained in:
Mr. eXoDia 2016-07-29 17:43:24 +02:00
parent 34dbdf35d5
commit eff55ccb02
2 changed files with 44 additions and 7 deletions
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48
src/gui/Src/Gui/DisassemblerGraphView.cpp
View File

@ -214,10 +214,27 @@ void DisassemblerGraphView::paintNormal(QPainter & p, QRect & viewportRect, int
void DisassemblerGraphView::paintOverview(QPainter & p, QRect & viewportRect, int xofs, int yofs)
{
// Scale
// Scale and translate painter
qreal sx = qreal(viewportRect.width()) / qreal(this->renderWidth);
qreal sy = qreal(viewportRect.height()) / qreal(this->renderHeight);
qreal s = qMin(sx, sy);
this->overviewScale = s;
if(sx < sy)
{
this->overviewXOfs = this->renderXOfs * s;
this->overviewYOfs = this->renderYOfs * s + (qreal(this->renderHeight) * sy - qreal(this->renderHeight) * s) / 2;
}
else if(sy < sx)
{
this->overviewXOfs = this->renderXOfs * s + (qreal(this->renderWidth) * sx - qreal(this->renderWidth) * s) / 2;
this->overviewYOfs = this->renderYOfs * s;
}
else
{
this->overviewXOfs = this->renderXOfs;
this->overviewYOfs = this->renderYOfs;
}
p.translate(this->overviewXOfs, this->overviewYOfs);
p.scale(s, s);
// Scaled pen
@ -258,11 +275,14 @@ void DisassemblerGraphView::paintOverview(QPainter & p, QRect & viewportRect, in
}
// Draw viewport selection
QPoint translation(this->renderXOfs - xofs, this->renderYOfs - yofs);
viewportRect.translate(-translation.x(), -translation.y());
p.setPen(QPen(Qt::black, penWidth, Qt::DotLine));
p.setBrush(Qt::transparent);
p.drawRect(viewportRect);
if(s < 1.0)
{
QPoint translation(this->renderXOfs - xofs, this->renderYOfs - yofs);
viewportRect.translate(-translation.x(), -translation.y());
p.setPen(QPen(Qt::black, penWidth, Qt::DotLine));
p.setBrush(Qt::transparent);
p.drawRect(viewportRect);
}
}
void DisassemblerGraphView::paintEvent(QPaintEvent* event)
@ -433,7 +453,16 @@ void DisassemblerGraphView::mousePressEvent(QMouseEvent* event)
{
if(event->button() == Qt::LeftButton)
{
//TODO: overview scroll
//Enter scrolling mode
this->scroll_base_x = event->x();
this->scroll_base_y = event->y();
this->scroll_mode = true;
this->setCursor(Qt::ClosedHandCursor);
this->viewport()->grabMouse();
//Scroll to the cursor
this->horizontalScrollBar()->setValue(((event->x() - this->overviewXOfs) / this->overviewScale) - this->viewport()->width() / 2);
this->verticalScrollBar()->setValue(((event->y() - this->overviewYOfs) / this->overviewScale) - this->viewport()->height() / 2);
}
else if(event->button() == Qt::RightButton)
{
@ -491,6 +520,11 @@ void DisassemblerGraphView::mouseMoveEvent(QMouseEvent* event)
{
int x_delta = this->scroll_base_x - event->x();
int y_delta = this->scroll_base_y - event->y();
if(drawOverview)
{
x_delta = -x_delta / this->overviewScale;
y_delta = -y_delta / this->overviewScale;
}
this->scroll_base_x = event->x();
this->scroll_base_y = event->y();
this->horizontalScrollBar()->setValue(this->horizontalScrollBar()->value() + x_delta);

3
src/gui/Src/Gui/DisassemblerGraphView.h
View File

@ -290,6 +290,9 @@ private:
MenuBuilder* mMenuBuilder;
bool drawOverview;
QAction* mToggleOverviewAction;
int overviewXOfs;
int overviewYOfs;
qreal overviewScale;
protected:
#include "ActionHelpers.h"