Add a start for a Qt text editor (mainly for playing around - but it could turn into something useful down the road).

6 files changed, 377 insertions, 0 deletions

diff --git a/desktop-utilities/lumina-textedit/PlainTextEditor.cpp b/desktop-utilities/lumina-textedit/PlainTextEditor.cpp
new file mode 100644
index 00000000..7b105d20
--- /dev/null
+++ b/desktop-utilities/lumina-textedit/PlainTextEditor.cpp
@@ -0,0 +1,114 @@
+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2015, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#include "PlainTextEditor.h"
+
+#include <QColor>
+#include <QPainter>
+#include <QTextBlock>
+
+//==============
+//       PUBLIC
+//==============
+PlainTextEditor::PlainTextEditor(QWidget *parent) : QPlainTextEdit(parent){
+  LNW = new LNWidget(this);
+  showLNW = true;
+  connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(LNW_updateWidth()) );
+  connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(LNW_highlightLine()) );
+  connect(this, SIGNAL(updateRequest(const QRect&, int)), this, SLOT(LNW_update(const QRect&, int)) );
+	
+  LNW_updateWidth();
+  LNW_highlightLine();
+}
+PlainTextEditor::~PlainTextEditor(){
+	
+}
+
+void PlainTextEditor::showLineNumbers(bool show){
+  showLNW = show;
+  LNW->setVisible(show);
+  LNW_updateWidth();
+}
+
+//Functions for managing the line number widget
+int PlainTextEditor::LNWWidth(){
+  //Get the number of chars we need for line numbers
+  int lines = this->blockCount();
+  if(lines<1){ lines = 1; }
+  int chars = 1;
+  while(lines>=10){ chars++; lines/=10; }
+  return (this->fontMetrics().width("9")*chars + 4); //make sure to add a tiny bit of padding
+}
+
+void PlainTextEditor::paintLNW(QPaintEvent *ev){
+  QPainter P(LNW);
+  //First set the background color
+  P.fillRect(ev->rect(), QColor("lightgrey"));
+  //Now determine which line numbers to show (based on the current viewport)
+  QTextBlock block = this->firstVisibleBlock();
+  int bTop = blockBoundingGeometry(block).translated(contentOffset()).top();
+  int bBottom;
+  //Now loop over the blocks (lines) and write in the numbers
+  P.setPen(Qt::black); //setup the font color
+  while(block.isValid() && bTop<=ev->rect().bottom()){ //ensure block below top of viewport
+    bBottom = bTop+blockBoundingRect(block).height();
+    if(block.isVisible() && bBottom >= ev->rect().top()){ //ensure block above bottom of viewport
+      P.drawText(0,bTop, LNW->width(), this->fontMetrics().height(), Qt::AlignRight, QString::number(block.blockNumber()+1) );
+    }
+    //Go to the next block
+    block = block.next();
+    bTop = bBottom;
+  }
+}
+	
+//==============
+//       PRIVATE
+//==============
+
+//===================
+//       PRIVATE SLOTS
+//===================
+//Functions for managing the line number widget
+void PlainTextEditor::LNW_updateWidth(){
+  if(showLNW){
+    this->setViewportMargins( LNWWidth(), 0, 0, 0); //the LNW is contained within the left margin
+  }else{
+    this->setViewportMargins( 0, 0, 0, 0); //the LNW is contained within the left margin
+  }
+}
+
+void PlainTextEditor::LNW_highlightLine(){
+  if(this->isReadOnly()){ return; }
+  QColor highC = QColor(0,0,0,50); //just darken the line a bit
+  QTextEdit::ExtraSelection sel;
+  sel.format.setBackground(highC);
+  sel.format.setProperty(QTextFormat::FullWidthSelection, true);
+  sel.cursor = this->textCursor();
+  sel.cursor.clearSelection(); //just in case it already has one
+  setExtraSelections( QList<QTextEdit::ExtraSelection>() << sel );
+}
+
+void PlainTextEditor::LNW_update(const QRect &rect, int dy){
+  if(dy!=0){ LNW->scroll(0,dy); } //make sure to scroll the line widget the same amount as the editor
+  else{
+    //Some other reason we need to repaint the widget
+    LNW->update(0,rect.y(), LNW->width(), rect.height()); //also repaint the LNW in the same area
+  }
+  if(rect.contains(this->viewport()->rect())){
+    //Something in the currently-viewed area needs updating - make sure the LNW width is still correct
+    LNW_updateWidth();
+  }
+}
+
+//==================
+//       PROTECTED
+//==================
+void PlainTextEditor::resizeEvent(QResizeEvent *ev){
+  QPlainTextEdit::resizeEvent(ev); //do the normal resize processing
+  //Now re-adjust the placement of the LNW (within the left margin area)
+  QRect cGeom = this->contentsRect();
+  LNW->setGeometry( QRect(cGeom.left(), cGeom.top(), LNWWidth(), cGeom.height()) );
+}
diff --git a/desktop-utilities/lumina-textedit/PlainTextEditor.h b/desktop-utilities/lumina-textedit/PlainTextEditor.h
new file mode 100644
index 00000000..46841e59
--- /dev/null
+++ b/desktop-utilities/lumina-textedit/PlainTextEditor.h
@@ -0,0 +1,68 @@
+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2015, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#ifndef _LUMINA_PLAIN_TEXT_EDITOR_WIDGET_H
+#define _LUMINA_PLAIN_TEXT_EDITOR_WIDGET_H
+
+#include <QPlainTextEdit>
+#include <QWidget>
+#include <QResizeEvent>
+#include <QPaintEvent>
+
+//QPlainTextEdit subclass for providing the actual text editor functionality
+class PlainTextEditor : public QPlainTextEdit{
+	Q_OBJECT
+public:
+	PlainTextEditor(QWidget *parent = 0);
+	~PlainTextEditor();
+	
+	//Functions for setting up the editor
+	void showLineNumbers(bool show = true);
+
+	//Functions for managing the line number widget (internal - do not need to run directly)
+	int LNWWidth(); //replacing the LNW size hint detection
+	void paintLNW(QPaintEvent *ev); //forwarded from the LNW paint event
+	
+private:
+	QWidget *LNW; //Line Number Widget
+	bool showLNW;
+
+private slots:
+	//Functions for managing the line number widget
+	void LNW_updateWidth();  	// Tied to the QPlainTextEdit::blockCountChanged() signal
+	void LNW_highlightLine();  		// Tied to the QPlainTextEdit::cursorPositionChanged() signal
+	void LNW_update(const QRect&, int); 	// Tied to the QPlainTextEdit::updateRequest() signal
+
+protected:
+	void resizeEvent(QResizeEvent *ev);
+};
+
+//===========================================================
+// Small Widget for painting the line numbers in the PlainTextEditor
+//===========================================================
+class LNWidget : public QWidget{
+	Q_OBJECT
+private:
+	PlainTextEditor *TE;
+public:
+	LNWidget( PlainTextEditor *edit) : QWidget(edit){
+	  TE = edit;
+	}
+	~LNWidget(){}
+	//Replace the virtual QWidget size hint function
+	//  since the main text editor controls the size/location of this widget
+	QSize sizeHint() const{
+	  return QSize(TE->LNWWidth(),0);
+	}
+protected:
+	//Replace the virtual QWidget paint event function
+	// since the main text editor control the size/location of this widget
+	void paintEvent(QPaintEvent *ev){
+	  TE->paintLNW(ev);
+	}
+};
+#endif
+
diff --git a/desktop-utilities/lumina-textedit/lumina-textedit.pro b/desktop-utilities/lumina-textedit/lumina-textedit.pro
new file mode 100644
index 00000000..148dfa37
--- /dev/null
+++ b/desktop-utilities/lumina-textedit/lumina-textedit.pro
@@ -0,0 +1,92 @@
+include("$${PWD}/../../OS-detect.pri")
+
+QT += core gui widgets
+
+TARGET  = lumina-textedit
+target.path = $${L_BINDIR}
+
+HEADERS	+= PlainTextEditor.h \
+			syntaxSupport.h
+		
+SOURCES	+= main.cpp \
+		PlainTextEditor.cpp \
+		syntaxSupport.cpp
+
+
+LIBS += -lLuminaUtils
+
+
+DEPENDPATH	+= ../../libLumina
+
+TRANSLATIONS =  i18n/lumina-textedit_af.ts \
+                i18n/lumina-textedit_ar.ts \
+                i18n/lumina-textedit_az.ts \
+                i18n/lumina-textedit_bg.ts \
+                i18n/lumina-textedit_bn.ts \
+                i18n/lumina-textedit_bs.ts \
+                i18n/lumina-textedit_ca.ts \
+                i18n/lumina-textedit_cs.ts \
+                i18n/lumina-textedit_cy.ts \
+                i18n/lumina-textedit_da.ts \
+                i18n/lumina-textedit_de.ts \
+                i18n/lumina-textedit_el.ts \
+                i18n/lumina-textedit_en_GB.ts \
+                i18n/lumina-textedit_en_ZA.ts \
+                i18n/lumina-textedit_es.ts \
+                i18n/lumina-textedit_et.ts \
+                i18n/lumina-textedit_eu.ts \
+                i18n/lumina-textedit_fa.ts \
+                i18n/lumina-textedit_fi.ts \
+                i18n/lumina-textedit_fr.ts \
+                i18n/lumina-textedit_fr_CA.ts \
+                i18n/lumina-textedit_gl.ts \
+                i18n/lumina-textedit_he.ts \
+                i18n/lumina-textedit_hi.ts \
+                i18n/lumina-textedit_hr.ts \
+                i18n/lumina-textedit_hu.ts \
+                i18n/lumina-textedit_id.ts \
+                i18n/lumina-textedit_is.ts \
+                i18n/lumina-textedit_it.ts \
+                i18n/lumina-textedit_ja.ts \
+                i18n/lumina-textedit_ka.ts \
+                i18n/lumina-textedit_ko.ts \
+                i18n/lumina-textedit_lt.ts \
+                i18n/lumina-textedit_lv.ts \
+                i18n/lumina-textedit_mk.ts \
+                i18n/lumina-textedit_mn.ts \
+                i18n/lumina-textedit_ms.ts \
+                i18n/lumina-textedit_mt.ts \
+                i18n/lumina-textedit_nb.ts \
+                i18n/lumina-textedit_nl.ts \
+                i18n/lumina-textedit_pa.ts \
+                i18n/lumina-textedit_pl.ts \
+                i18n/lumina-textedit_pt.ts \
+                i18n/lumina-textedit_pt_BR.ts \
+                i18n/lumina-textedit_ro.ts \
+                i18n/lumina-textedit_ru.ts \
+                i18n/lumina-textedit_sk.ts \
+                i18n/lumina-textedit_sl.ts \
+                i18n/lumina-textedit_sr.ts \
+                i18n/lumina-textedit_sv.ts \
+                i18n/lumina-textedit_sw.ts \
+                i18n/lumina-textedit_ta.ts \
+                i18n/lumina-textedit_tg.ts \
+                i18n/lumina-textedit_th.ts \
+                i18n/lumina-textedit_tr.ts \
+                i18n/lumina-textedit_uk.ts \
+                i18n/lumina-textedit_uz.ts \
+                i18n/lumina-textedit_vi.ts \
+                i18n/lumina-textedit_zh_CN.ts \
+                i18n/lumina-textedit_zh_HK.ts \
+                i18n/lumina-textedit_zh_TW.ts \
+                i18n/lumina-textedit_zu.ts
+
+dotrans.path=$${L_SHAREDIR}/Lumina-DE/i18n/
+dotrans.extra=cd i18n && $${LRELEASE} -nounfinished *.ts && cp *.qm $(INSTALL_ROOT)$${L_SHAREDIR}/Lumina-DE/i18n/
+
+INSTALLS += target dotrans
+
+NO_I18N{
+  INSTALLS -= dotrans
+}
+
diff --git a/desktop-utilities/lumina-textedit/main.cpp b/desktop-utilities/lumina-textedit/main.cpp
new file mode 100644
index 00000000..899382c7
--- /dev/null
+++ b/desktop-utilities/lumina-textedit/main.cpp
@@ -0,0 +1,32 @@
+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2015, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#include <QApplication>
+#include <QDebug>
+
+#include <LuminaThemes.h>
+#include <LuminaUtils.h>
+
+#include "PlainTextEditor.h"
+#include "syntaxSupport.h"
+
+int  main(int argc, char *argv[]) {
+   LTHEME::LoadCustomEnvSettings();
+   QApplication a(argc, argv);
+   LUtils::LoadTranslation(&a, "lumina-textedit");
+   //Now go ahead and setup the app
+   LuminaThemeEngine theme(&a);
+     
+   //Now start the window
+   PlainTextEditor W;
+    Custom_Syntax *syntax = new Custom_Syntax(W.document());
+	syntax->loadRules("C++");
+    W.showLineNumbers(true);
+    //QObject::connect(&theme, SIGNAL(updateIcons()), &W, SLOT(updateIcons()) );
+
+   W.show();
+   return  a.exec();
+}
diff --git a/desktop-utilities/lumina-textedit/syntaxSupport.cpp b/desktop-utilities/lumina-textedit/syntaxSupport.cpp
new file mode 100644
index 00000000..27664c52
--- /dev/null
+++ b/desktop-utilities/lumina-textedit/syntaxSupport.cpp
@@ -0,0 +1,26 @@
+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2015, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#include "syntaxSupport.h"
+QStringList Custom_Syntax::availableRules(){
+  QStringList avail;
+    avail << "C++";
+	
+  return avail;
+}
+
+QString Custom_Syntax::ruleForFile(QString filename){
+  QString suffix = filename.section(".",-1);
+  if(suffix=="cpp" || suffix=="hpp" || suffix=="c" || suffix=="h"){ return "C++"; }
+  return "";
+}
+
+void Custom_Syntax::loadRules(QString type){
+  rules.clear();
+  if(type=="C++"){
+	  
+  }
+}
\ No newline at end of file
diff --git a/desktop-utilities/lumina-textedit/syntaxSupport.h b/desktop-utilities/lumina-textedit/syntaxSupport.h
new file mode 100644
index 00000000..e8944aa4
--- /dev/null
+++ b/desktop-utilities/lumina-textedit/syntaxSupport.h
@@ -0,0 +1,45 @@
+//===========================================
+//  Lumina-DE source code
+//  Copyright (c) 2015, Ken Moore
+//  Available under the 3-clause BSD license
+//  See the LICENSE file for full details
+//===========================================
+#ifndef _LUMINA_SYNTAX_HIGHLIGHER_CPP_H
+#define _LUMINA_SYNTAX_HIGHLIGHER_CPP_H
+
+#include <QSyntaxHighlighter>
+#include <QTextDocument>
+#include <QTextCharFormat>
+#include <QString>
+
+struct SyntaxRule{
+  QRegExp pattern;
+  QTextCharFormat format;
+};
+
+class Custom_Syntax : public QSyntaxHighlighter{
+	Q_OBJECT
+private:
+	QVector<SyntaxRule> rules;
+public:
+	Custom_Syntax(QTextDocument *parent = 0) : QSyntaxHighlighter(parent){
+	}
+	~Custom_Syntax(){}
+	
+	static QStringList availableRules();
+	static QString ruleForFile(QString filename);
+	void loadRules(QString type);
+protected:
+	void highlightBlock(const QString &text){
+	  for(int i=0; i<rules.length(); i++){
+	    QRegExp patt(rules[i].pattern); //need a copy of the rule's pattern (will be changing it below)
+	    int index = patt.indexIn(text);
+	    while(index>=0){
+	      int len = patt.matchedLength();
+	      setFormat(index, len, rules[i].format);
+	      index = patt.indexIn(text, index+len); //go to the next match
+	    }
+	  }
+	}
+};
+#endif
\ No newline at end of file