mirror of
https://invent.kde.org/graphics/okular
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362 lines
11 KiB
C++
362 lines
11 KiB
C++
// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil; c-brace-offset: 0; -*-
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// pageSize.cpp
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//
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// Part of KVIEWSHELL - A framework for multipage text/gfx viewers
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//
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// (C) 2002-2003 Stefan Kebekus
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// Distributed under the GPL
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#include <config.h>
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#include "pageSize.h"
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#include "debug_dvi.h"
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#include "length.h"
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#include <KLocalizedString>
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#include <QLoggingCategory>
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struct pageSizeItem
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{
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const char *name;
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float width; // in mm
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float height; // in mm
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const char *preferredUnit;
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};
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#define defaultMetricPaperSize 4 // Default paper size is "DIN A4"
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#define defaultImperialPaperSize 8 // Default paper size is "US Letter"
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static const pageSizeItem staticList[] = { {"DIN A0", 841.0f, 1189.0f, "mm"},
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{"DIN A1", 594.0f, 841.0f, "mm"},
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{"DIN A2", 420.0f, 594.0f, "mm"},
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{"DIN A3", 297.0f, 420.0f, "mm"},
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{"DIN A4", 210.0f, 297.0f, "mm"},
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{"DIN A5", 148.5f, 210.0f, "mm"},
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{"DIN B4", 250.0f, 353.0f, "mm"},
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{"DIN B5", 176.0f, 250.0f, "mm"},
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{"US Letter", 215.9f, 279.4f, "in"},
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{"US Legal", 215.9f, 355.6f, "in"},
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{nullptr, 0.0f, 0.0f, nullptr} // marks the end of the list.
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};
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pageSize::pageSize()
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{
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currentSize = defaultPageSize();
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pageWidth.setLength_in_mm(staticList[currentSize].width);
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pageHeight.setLength_in_mm(staticList[currentSize].height);
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}
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pageSize::pageSize(const SimplePageSize& s)
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{
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pageWidth = s.width();
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pageHeight = s.height();
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rectifySizes();
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reconstructCurrentSize();
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}
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bool pageSize::setPageSize(const QString& name)
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{
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// See if we can recognize the string
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QString currentName;
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for(int i=0; staticList[i].name != nullptr; i++) {
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currentName = QString::fromLocal8Bit(staticList[i].name);
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if (currentName == name) {
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currentSize = i;
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// Set page width/height accordingly
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pageWidth.setLength_in_mm(staticList[currentSize].width);
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pageHeight.setLength_in_mm(staticList[currentSize].height);
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emit(sizeChanged(*this));
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return true;
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}
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}
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// Check if the string contains 'x'. If yes, we assume it is of type
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// "<number>x<number>". If yes, the first number is interpreted as
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// the width in mm, the second as the height in mm
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if (name.indexOf(QLatin1Char('x')) >= 0) {
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bool wok, hok;
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float pageWidth_tmp = name.section(QLatin1Char('x'),0,0).toFloat(&wok);
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float pageHeight_tmp = name.section(QLatin1Char('x'),1,1).toFloat(&hok);
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if (wok && hok) {
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pageWidth.setLength_in_mm(pageWidth_tmp);
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pageHeight.setLength_in_mm(pageHeight_tmp);
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rectifySizes();
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reconstructCurrentSize();
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emit(sizeChanged(*this));
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return true;
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}
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}
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// Check if the string contains ','. If yes, we assume it is of type
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// "<number><unit>,<number><uni>". The first number is supposed to
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// be the width, the second the height.
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if (name.indexOf(QLatin1Char(',')) >= 0) {
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bool wok, hok;
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float pageWidth_tmp = Length::convertToMM(name.section(QLatin1Char(','),0,0), &wok);
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float pageHeight_tmp = Length::convertToMM(name.section(QLatin1Char(','),1,1), &hok);
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if (wok && hok) {
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pageWidth.setLength_in_mm(pageWidth_tmp);
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pageHeight.setLength_in_mm(pageHeight_tmp);
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rectifySizes();
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reconstructCurrentSize();
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emit(sizeChanged(*this));
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return true;
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}
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}
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// Last resource. Set the default, in case the string is
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// unintelligible to us.
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currentSize = defaultPageSize();
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pageWidth.setLength_in_mm(staticList[currentSize].width);
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pageHeight.setLength_in_mm(staticList[currentSize].height);
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qCCritical(OkularDviShellDebug) << "pageSize::setPageSize: could not parse '" << name << "'. Using " << staticList[currentSize].name << " as a default." << endl;
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emit(sizeChanged(*this));
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return false;
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}
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void pageSize::setPageSize(double width, double height)
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{
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SimplePageSize oldPage = *this;
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pageWidth.setLength_in_mm(width);
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pageHeight.setLength_in_mm(height);
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rectifySizes();
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reconstructCurrentSize();
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if ( !isNearlyEqual(oldPage))
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emit(sizeChanged(*this));
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}
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void pageSize::setPageSize(const QString& width, const QString& _widthUnits, const QString& height, const QString& _heightUnits)
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{
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SimplePageSize oldPage = *this;
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double w = width.toFloat();
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double h = height.toFloat();
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QString widthUnits = _widthUnits;
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if ((widthUnits != QLatin1String("cm")) && (widthUnits != QLatin1String("mm")) && (widthUnits != QLatin1String("in"))) {
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qCCritical(OkularDviShellDebug) << "Unrecognized page width unit '" << widthUnits << "'. Assuming mm" << endl;
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widthUnits = QStringLiteral("mm");
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}
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pageWidth.setLength_in_mm(w);
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if (widthUnits == QLatin1String("cm"))
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pageWidth.setLength_in_cm(w);
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if (widthUnits == QLatin1String("in"))
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pageWidth.setLength_in_inch(w);
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QString heightUnits = _heightUnits;
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if ((heightUnits != QLatin1String("cm")) && (heightUnits != QLatin1String("mm")) && (heightUnits != QLatin1String("in"))) {
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qCCritical(OkularDviShellDebug) << "Unrecognized page height unit '" << widthUnits << "'. Assuming mm" << endl;
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heightUnits = QStringLiteral("mm");
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}
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pageHeight.setLength_in_mm(h);
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if (heightUnits == QLatin1String("cm"))
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pageHeight.setLength_in_cm(h);
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if (heightUnits == QLatin1String("in"))
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pageHeight.setLength_in_inch(h);
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rectifySizes();
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reconstructCurrentSize();
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if ( !isNearlyEqual(oldPage))
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emit(sizeChanged(*this));
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}
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pageSize &pageSize::operator= (const pageSize &src)
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{
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SimplePageSize oldPage = *this;
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currentSize = src.currentSize;
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pageWidth = src.pageWidth;
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pageHeight = src.pageHeight;
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if ( !isNearlyEqual(oldPage))
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emit(sizeChanged(*this));
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return *this;
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}
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void pageSize::rectifySizes()
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{
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// Now do some sanity checks to make sure that values are not
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// outrageous. We allow values between 5cm and 50cm.
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if (pageWidth.getLength_in_mm() < 50)
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pageWidth.setLength_in_mm(50.0);
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if (pageWidth.getLength_in_mm() > 1200)
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pageWidth.setLength_in_mm(1200);
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if (pageHeight.getLength_in_mm() < 50)
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pageHeight.setLength_in_mm(50);
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if (pageHeight.getLength_in_mm() > 1200)
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pageHeight.setLength_in_mm(1200);
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return;
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}
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QString pageSize::preferredUnit() const
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{
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if (currentSize >= 0)
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return QString::fromLocal8Bit(staticList[currentSize].preferredUnit);
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// User-defined size. Give a preferred unit depending on the locale.
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if (QLocale::system().measurementSystem() == QLocale::MetricSystem)
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return QStringLiteral("mm");
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else
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return QStringLiteral("in");
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}
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QString pageSize::widthString(const QString& unit) const
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{
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QString answer = QStringLiteral("--");
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if (unit == QLatin1String("cm"))
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answer.setNum(pageWidth.getLength_in_cm());
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if (unit == QLatin1String("mm"))
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answer.setNum(pageWidth.getLength_in_mm());
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if (unit == QLatin1String("in"))
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answer.setNum(pageWidth.getLength_in_inch());
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return answer;
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}
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QString pageSize::heightString(const QString& unit) const
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{
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QString answer = QStringLiteral("--");
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if (unit == QLatin1String("cm"))
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answer.setNum(pageHeight.getLength_in_cm());
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if (unit == QLatin1String("mm"))
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answer.setNum(pageHeight.getLength_in_mm());
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if (unit == QLatin1String("in"))
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answer.setNum(pageHeight.getLength_in_inch());
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return answer;
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}
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QStringList pageSize::pageSizeNames()
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{
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QStringList names;
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for(int i=0; staticList[i].name != nullptr; i++)
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names << QString::fromLocal8Bit(staticList[i].name);
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return names;
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}
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QString pageSize::formatName() const
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{
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if (currentSize >= 0)
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return QString::fromLocal8Bit(staticList[currentSize].name);
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else
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return QString();
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}
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int pageSize::getOrientation() const
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{
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if (currentSize == -1) {
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qCCritical(OkularDviShellDebug) << "pageSize::getOrientation: getOrientation called for page format that does not have a name." << endl;
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return 0;
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}
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if (pageWidth.getLength_in_mm() == staticList[currentSize].width)
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return 0;
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else
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return 1;
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}
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void pageSize::setOrientation(int orient)
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{
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if (currentSize == -1) {
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qCCritical(OkularDviShellDebug) << "pageSize::setOrientation: setOrientation called for page format that does not have a name." << endl;
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return;
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}
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if (orient == 1) {
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pageWidth.setLength_in_mm(staticList[currentSize].height);
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pageHeight.setLength_in_mm(staticList[currentSize].width);
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} else {
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pageWidth.setLength_in_mm(staticList[currentSize].width);
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pageHeight.setLength_in_mm(staticList[currentSize].height);
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}
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emit(sizeChanged(*this));
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}
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QString pageSize::serialize() const
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{
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if ((currentSize >= 0) && (fabs(staticList[currentSize].height-pageHeight.getLength_in_mm()) <= 0.5))
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return QString::fromLocal8Bit(staticList[currentSize].name);
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else
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return QStringLiteral("%1x%2").arg(pageWidth.getLength_in_mm()).arg(pageHeight.getLength_in_mm());
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}
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QString pageSize::description() const
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{
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if (!isValid())
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return QString();
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QString size = QStringLiteral(" ");
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if (formatNumber() == -1) {
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if (QLocale::system().measurementSystem() == QLocale::MetricSystem)
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size += QStringLiteral("%1x%2 mm").arg(width().getLength_in_mm(), 0, 'f', 0).arg(height().getLength_in_mm(), 0, 'f', 0);
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else
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size += QStringLiteral("%1x%2 in").arg(width().getLength_in_inch(), 0, 'g', 2).arg(height().getLength_in_inch(), 0, 'g', 2);
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} else {
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size += formatName() + QLatin1Char('/');
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if (getOrientation() == 0)
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size += i18n("portrait");
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else
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size += i18n("landscape");
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}
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return size + QLatin1Char(' ');
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}
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void pageSize::reconstructCurrentSize()
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{
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for(int i=0; staticList[i].name != nullptr; i++) {
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if ((fabs(staticList[i].width - pageWidth.getLength_in_mm()) <= 2) && (fabs(staticList[i].height - pageHeight.getLength_in_mm()) <= 2)) {
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currentSize = i;
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pageWidth.setLength_in_mm(staticList[currentSize].width);
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pageHeight.setLength_in_mm(staticList[currentSize].height);
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return;
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}
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if ((fabs(staticList[i].height - pageWidth.getLength_in_mm()) <= 2) && (fabs(staticList[i].width - pageHeight.getLength_in_mm()) <= 2)) {
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currentSize = i;
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pageWidth.setLength_in_mm(staticList[currentSize].height);
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pageHeight.setLength_in_mm(staticList[currentSize].width);
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return;
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}
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}
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currentSize = -1;
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return;
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}
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int pageSize::defaultPageSize()
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{
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// FIXME: static_cast<QPrinter::PageSize>(KLocale::global()->pageSize())
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// is the proper solution here. Then you can determine the values
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// without using your hardcoded table too!
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if (QLocale::system().measurementSystem() == QLocale::MetricSystem)
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return defaultMetricPaperSize;
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else
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return defaultImperialPaperSize;
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}
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