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Fix previous/next page => update qlistbox

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svn path=/trunk/kdegraphics/kpdf/; revision=251000
This commit is contained in:
Laurent Montel 2003-09-14 14:22:37 +00:00
parent daa9104a9e
commit 36c336d237
2 changed files with 59 additions and 41 deletions
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94
kpdf/kpdf_part.cpp
View file

@ -13,6 +13,7 @@
#include <kprinter.h>
#include <kstdaction.h>
#include <kparts/genericfactory.h>
#include <kdebug.h>
#include "part.h"
@ -76,9 +77,9 @@ Part::Part(QWidget *parentWidget, const char *widgetName,
actionCollection(), "back");
KStdAction::forward (this, SLOT(forward()),
actionCollection(), "forward");
KStdAction::prior (m_outputDev, SLOT(previousPage()),
KStdAction::prior (this, SLOT(slotPreviousPage()),
actionCollection(), "previous_page");
KStdAction::next (m_outputDev, SLOT(nextPage()),
KStdAction::next (this, SLOT(slotNextPage()),
actionCollection(), "next_page" );
// set our XML-UI resource file
@ -89,6 +90,20 @@ Part::~Part()
{
}
void Part::slotNextPage()
{
m_currentPage = pdfpartview->pagesListBox->currentItem() + 1;
pdfpartview->pagesListBox->setCurrentItem(m_currentPage);
m_outputDev->nextPage();
}
void Part::slotPreviousPage()
{
m_currentPage = pdfpartview->pagesListBox->currentItem() - 1;
pdfpartview->pagesListBox->setCurrentItem(m_currentPage );
m_outputDev->previousPage();
}
KAboutData*
Part::createAboutData()
{
@ -147,49 +162,48 @@ Part::openFile()
void
Part::displayPage(int pageNumber, float /*zoomFactor*/)
{
if (pageNumber <= 0 || pageNumber > m_doc->getNumPages())
return;
if (pageNumber <= 0 || pageNumber > m_doc->getNumPages())
return;
const double pageWidth = m_doc->getPageWidth (pageNumber) * m_zoomFactor;
const double pageHeight = m_doc->getPageHeight(pageNumber) * m_zoomFactor;
const double pageWidth = m_doc->getPageWidth (pageNumber) * m_zoomFactor;
const double pageHeight = m_doc->getPageHeight(pageNumber) * m_zoomFactor;
// Pixels per point when the zoomFactor is 1.
const float basePpp = QPaintDevice::x11AppDpiX() / 72.0;
// Pixels per point when the zoomFactor is 1.
const float basePpp = QPaintDevice::x11AppDpiX() / 72.0;
switch (m_zoomMode)
{
case FitWidth:
{
const double pageAR = pageWidth/pageHeight; // Aspect ratio
switch (m_zoomMode)
{
case FitWidth:
{
const double pageAR = pageWidth/pageHeight; // Aspect ratio
const int canvasWidth = m_outputDev->contentsRect().width();
const int canvasHeight = m_outputDev->contentsRect().height();
const int scrollBarWidth = m_outputDev->verticalScrollBar()->width();
const int canvasWidth = m_outputDev->contentsRect().width();
const int canvasHeight = m_outputDev->contentsRect().height();
const int scrollBarWidth = m_outputDev->verticalScrollBar()->width();
// Calculate the height so that the page fits the viewport width
// assuming that we need a vertical scrollbar.
float height = float(canvasWidth - scrollBarWidth) / pageAR;
// Calculate the height so that the page fits the viewport width
// assuming that we need a vertical scrollbar.
float height = float(canvasWidth - scrollBarWidth) / pageAR;
// If the vertical scrollbar wasn't needed after all, calculate the page
// size so that the page fits the viewport width without the scrollbar.
if (ceil(height) <= canvasHeight)
{
height = float(canvasWidth) / pageAR;
// If the vertical scrollbar wasn't needed after all, calculate the page
// size so that the page fits the viewport width without the scrollbar.
if (ceil(height) <= canvasHeight)
{
height = float(canvasWidth) / pageAR;
// Handle the rare case that enlarging the page resulted in the need of
// a vertical scrollbar. We can fit the page to the viewport height in
// this case.
if (ceil(height) > canvasHeight)
height = float(canvasHeight) * pageAR;
}
// Handle the rare case that enlarging the page resulted in the need of
// a vertical scrollbar. We can fit the page to the viewport height in
// this case.
if (ceil(height) > canvasHeight)
height = float(canvasHeight) * pageAR;
}
m_zoomFactor = (height / pageHeight) / basePpp;
break;
}
case FixedFactor:
default:
break;
}
m_zoomFactor = (height / pageHeight) / basePpp;
break;
}
case FixedFactor:
default:
break;
}
//const float ppp = basePpp * m_zoomFactor; // pixels per point
@ -418,7 +432,9 @@ Part::redrawPage()
void
Part::pageClicked ( QListBoxItem * qbi )
{
m_outputDev->setPage(pdfpartview->pagesListBox->index(qbi) + 1);
kdDebug()<<"Part::pageClicked ( QListBoxItem * qbi ) \n";
m_currentPage = pdfpartview->pagesListBox->index(qbi)+1;
m_outputDev->setPage(m_currentPage);
}
BrowserExtension::BrowserExtension(Part* parent)

6
kpdf/kpdf_part.h
View file

@ -85,6 +85,8 @@ namespace KPDF
void zoomOut() { m_zoomFactor -= 0.1; update(); };
void back() { /* stub */ };
void forward() { /* stub */ };
void slotNextPage();
void slotPreviousPage();
void displayNextPage();
void displayPreviousPage();
@ -112,7 +114,7 @@ namespace KPDF
class BrowserExtension : public KParts::BrowserExtension
{
Q_OBJECT
public:
BrowserExtension(Part*);
@ -120,7 +122,7 @@ namespace KPDF
// Automatically detected by the host.
void print();
};
}
#endif