mpviewoptionwindow.cc

c++的guiQt做的开发

/** @file
 MPViewOptionWindow - widget for editing program options
 Options are arranged to tabs and it is ensured, that only one dialog at once is active
 (via Private constructor and static method to invoke the dialog, which will focus on
 existing dialog if it exists, instead of creating second one)
 @author Martin Petricek
*/

#include "mpviewoptionwindow.h"
#include "config.h"
#include "fileoption.h"
#include "lookandfeel.h"
#include "menu.h"
#include "option.h"
#include "settings.h"
#include "toolbar.h"
#include "util.h"
#include "main.h"
#include "version.h"
#include <lang.h>
#include <assert.h>
#include <QApplication>
#include <QDir>
#include <QStyleFactory>
#include <stdlib.h>

namespace gui {

using namespace std;

/**
 The only Option window<br>
 Pointer to running MPViewOptionWindow instance or NULL if none active.
*/
MPViewOptionWindow *opt=NULL;

/**
 Invoke option dialog. Ensure only one copy is running at time
 @param msystem Menu system reference for given option window (needed to get toolbar list)
*/
void MPViewOptionWindow::optionsDialog(Menu *msystem) {
 if (opt) { //the dialog is already active
  opt->activateWindow();
 } else { //create new dialog
  opt=new MPViewOptionWindow(msystem);
  opt->show();
 }
}

/**
 Default constructor of option window.
 @param msystem Menu system (Needed for toolbar list)
 @param parent parent widget containing this control
 */
MPViewOptionWindow::MPViewOptionWindow(Menu *msystem,QWidget *parent /*=0*/) : OptionWindow(QString(APP_NAME)+" - "+tr("options"),parent,"option") {
 menuSystem=msystem;
 setLeftCornerText("~/" CONFIG_DIR "/" CONFIG_FILE);
 setUpdatesEnabled(false);
 init();
 setUpdatesEnabled(true);
}

/**
 Add Option to the window (type of option is file)
 @param otab Tab holding that option
 @param caption Label for this option
 @param key Key of the given option
 @param defValue Default value if option not found in configuration
 */
void MPViewOptionWindow::addOptionFile(QWidget *otab,const QString &caption,const QString &key,const QString &defValue/*=QString::null*/) {
 addOption(otab,caption,new FileOption(key,otab,defValue));
}

/**
 Initialize window with options
 */
void MPViewOptionWindow::init() {
 QWidget *edit_tab=addTab(tr("Viewer"));
 addOptionBool(edit_tab,tr("Remember path of last opened/saved file"),"history/save_filePath",true);
 addOptionBool(edit_tab,tr("Enable undo"),"undo",true);
 addText      (edit_tab,tr("Undo will use extra memory to remember original image"));
 addOptionBool(edit_tab,tr("Hide viewer window when capturing screen"),"capture/hide");
 addOptionInt (edit_tab,tr("Delay when capturing screen (in milliseconds)"),"capture/delay");
 addText      (edit_tab,tr("After hiding window, application need some time to rapaint themselves.<br>Adjust the delay according to your computer speed"));
 addOptionBool(edit_tab,tr("Center images smaller than window"),"view/center");
 addOptionBool(edit_tab,tr("Confirm file delete"),"view/confirm_delete");
 finishTab    (edit_tab);

 QWidget *data_tab=addTab(tr("Paths"));
 addText  (data_tab,tr("You can use environment variables (for example $HOME) in settings on this page"));
 addOption(data_tab,tr("Icon Path"),"path/icon");
 addOptionFile(data_tab,tr("Console log file"),"path/console_log");
 finishTab(data_tab);

 QWidget *tool_tab=addTab(tr("Toolbars"));
 addText(tool_tab,tr("These toolbars will be shown:"));
 QStringList tbs=menuSystem->getToolbarList();
 for (int i=0;i<tbs.count();i++) {
  ToolBar* tb=menuSystem->getToolbar(tbs[i]);
  if (!tb) continue; //Someone put invalid toolbar in settings. Just ignore it
  addOptionBool(tool_tab,tb->windowTitle(),QString("toolbar/")+tbs[i],true);
 }
 finishTab(tool_tab);

 QWidget *laf_tab=addTab(tr("Look and Feel"));
 //Get list of styles
 QStringList styles=QStyleFactory::keys();
 styles.prepend("");
 //Get list of icon themes
 QStringList iconPath=globalSettings->readPath("icon");
 QStringList iconThemes;
 for (int pth=0;pth<iconPath.count();pth++) {
  QDir dir(iconPath[pth]);
  if (dir.isReadable()) {
   iconThemes+=dir.entryList(QDir::Dirs);
  }
 }
 //Remove . and .. directories
 iconThemes.removeAll(".");
 iconThemes.removeAll("..");
 //theme cannot be named 'default'
 iconThemes.removeAll("default");
 //Sort list
 iconThemes.sort();
 //Remove duplicates
 QString lastTheme;
 QStringList iconThemesUnique;
 for (QStringList::Iterator it=iconThemes.begin();it!=iconThemes.end();++it) {
  if (*it!=lastTheme) {
   lastTheme=*it;
   iconThemesUnique+=lastTheme;
  }
 }
 //prepend 'default' to list
 iconThemesUnique.prepend("default");

 //Language list
 QStringList languages=listTranslations();
 languages.prepend("en");
 QStringList languageDesc=languages;
 for (int lng=0;lng<languageDesc.count();lng++) {
  languageDesc[lng]+=": "+languageName(languageDesc[lng]);
 }
 languageDesc.prepend(tr("(system default)"));
 languages.prepend("");

 //Default font
 QString defFont=QApplication::font().toString();
 addText       (laf_tab,tr("You can set fonts used in application"));
 addOptionFont (laf_tab,tr("Application font"),"gui/font_main",defFont);
 addOptionFont (laf_tab,tr("Console font"),"gui/font_con",defFont);
 addOptionFont (laf_tab,tr("Statusbar font"),"gui/font_status",defFont);
 addText       (laf_tab,tr("You can specify overall visual style"));
 addOptionCombo(laf_tab,tr("Style"),"gui/style",styles);
 addOptionCombo(laf_tab,tr("Icon theme"),"icon/theme/current",iconThemesUnique);
 addOptionInt  (laf_tab,tr("Size of icons"),"icon/size");
 addText       (laf_tab,tr("You can override application language specified by LC_ALL, LC_MESSAGE or LANG environment variables"));
 addOptionCombo(laf_tab,tr("Language"),"gui/language",languages,languageDesc);
 finishTab     (laf_tab);
}

/** Called after pushing 'Apply' button */
void MPViewOptionWindow::postApply() {
 applyLookAndFeel();
 //TODO: Should deinit+init only when translation changes instead. Or possibly update the translation without reinit ...
 //TODO: or at least retrieve and re-set current tab
/*
 TODO: only on language change

 clear();
 init();
*/
}

/** default destructor */
MPViewOptionWindow::~MPViewOptionWindow() {
 opt=NULL;//No instance active now
}

} // namespace gui