Add additional useful widgets to the status bar

app/app.pro

@@ -79,7 +79,9 @@ HEADERS += \
     src/checkupdatesdialog.h \
     src/presetdialog.h \
     src/commandlineparser.h \
-    src/commandlineexporter.h
+    src/commandlineexporter.h \
+    src/statusbar.h \
+    src/elidedlabel.h
 
 SOURCES += \
     src/importlayersdialog.cpp \
@@ -122,7 +124,9 @@ SOURCES += \
     src/presetdialog.cpp \
     src/app_util.cpp \
     src/commandlineparser.cpp \
-    src/commandlineexporter.cpp
+    src/commandlineexporter.cpp \
+    src/statusbar.cpp \
+    src/elidedlabel.cpp
 
 FORMS += \
     ui/importimageseqpreview.ui \

app/src/elidedlabel.cpp

@@ -0,0 +1,132 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "elidedlabel.h"
+
+#include <QPainter>
+#include <QSizePolicy>
+#include <QTextLayout>
+
+
+ElidedLabel::ElidedLabel(QWidget *parent)
+    : QFrame(parent)
+    , elided(false)
+{
+    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
+}
+
+//! [0]
+ElidedLabel::ElidedLabel(const QString &text, QWidget *parent) :
+    ElidedLabel(parent)
+{
+    content = text;
+}
+//! [0]
+
+//! [1]
+void ElidedLabel::setText(const QString &newText)
+{
+    content = newText;
+    update();
+}
+//! [1]
+
+QSize ElidedLabel::sizeHint() const
+{
+    return fontMetrics().size(0, content);
+}
+
+//! [2]
+void ElidedLabel::paintEvent(QPaintEvent *event)
+{
+    QFrame::paintEvent(event);
+
+    QPainter painter(this);
+    QFontMetrics fontMetrics = painter.fontMetrics();
+
+    bool didElide = false;
+    int lineSpacing = fontMetrics.lineSpacing();
+    int y = 0;
+
+    QTextLayout textLayout(content, painter.font());
+    textLayout.beginLayout();
+    forever {
+        QTextLine line = textLayout.createLine();
+
+        if (!line.isValid())
+            break;
+
+        line.setLineWidth(width());
+        int nextLineY = y + lineSpacing;
+
+        if (height() >= nextLineY + lineSpacing) {
+            line.draw(&painter, QPoint(0, y));
+            y = nextLineY;
+            //! [2]
+            //! [3]
+        } else {
+            QString lastLine = content.mid(line.textStart());
+            QString elidedLastLine = fontMetrics.elidedText(lastLine, Qt::ElideRight, width());
+            painter.drawText(QPoint(0, y + fontMetrics.ascent()), elidedLastLine);
+            line = textLayout.createLine();
+            didElide = line.isValid();
+            break;
+        }
+    }
+    textLayout.endLayout();
+    //! [3]
+
+    //! [4]
+    if (didElide != elided) {
+        elided = didElide;
+        emit elisionChanged(didElide);
+    }
+}
+//! [4]

app/src/elidedlabel.h

@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef ELIDEDLABEL_H
+#define ELIDEDLABEL_H
+
+#include <QFrame>
+#include <QString>
+
+//! [0]
+class ElidedLabel : public QFrame
+{
+    Q_OBJECT
+    Q_PROPERTY(QString text READ text WRITE setText)
+    Q_PROPERTY(bool isElided READ isElided)
+
+public:
+    explicit ElidedLabel(QWidget *parent = nullptr);
+    explicit ElidedLabel(const QString &text, QWidget *parent = nullptr);
+
+    void setText(const QString &text);
+    const QString & text() const { return content; }
+    bool isElided() const { return elided; }
+
+    virtual QSize sizeHint() const override;
+
+protected:
+    void paintEvent(QPaintEvent *event) override;
+
+signals:
+    void elisionChanged(bool elided);
+
+private:
+    bool elided;
+    QString content;
+};
+//! [0]
+
+#endif // TEXTWRAPPINGWIDGET_H

app/src/mainwindow2.cpp

@@ -29,7 +29,6 @@ GNU General Public License for more details.
 #include <QTabletEvent>
 #include <QStandardPaths>
 #include <QDateTime>
-#include <QLabel>
 
 // core_lib headers
 #include "pencildef.h"
@@ -110,6 +109,10 @@ MainWindow2::MainWindow2(QWidget* parent) :
     ui->scribbleArea->setEditor(mEditor);
     ui->scribbleArea->init();
 
+    ui->statusBar->setEditor(mEditor);
+    ui->statusBar->updateZoomStatus();
+    ui->statusBar->setVisible(mEditor->preference()->isOn(SETTING::SHOW_STATUS_BAR));
+
     mCommands = new ActionCommands(this);
     mCommands->setCore(mEditor);
 
@@ -119,15 +122,10 @@ MainWindow2::MainWindow2(QWidget* parent) :
 
     readSettings();
 
-    mZoomLabel = new QLabel("");
-    ui->statusbar->addWidget(mZoomLabel);
-
-    updateZoomLabel();
     selectionChanged();
 
     connect(mEditor, &Editor::needSave, this, &MainWindow2::autoSave);
     connect(mToolBox, &ToolBoxWidget::clearButtonClicked, mEditor, &Editor::clearCurrentFrame);
-    connect(mEditor->view(), &ViewManager::viewChanged, this, &MainWindow2::updateZoomLabel);
 
     mEditor->tools()->setDefaultTool();
     ui->background->init(mEditor->preference());
@@ -226,6 +224,7 @@ void MainWindow2::createDockWidgets()
     makeConnections(mEditor, mColorPalette);
     makeConnections(mEditor, mToolOptions);
     makeConnections(mEditor, mDisplayOptionWidget);
+    makeConnections(mEditor, ui->statusBar);
 
     for (BaseDockWidget* w : mDockWidgets)
     {
@@ -326,6 +325,8 @@ void MainWindow2::createMenus()
     connect(mEditor->view(), &ViewManager::viewFlipped, this, &MainWindow2::viewFlipped);
 
     PreferenceManager* prefs = mEditor->preference();
+    connect(ui->actionStatusBar, &QAction::triggered, ui->statusBar, &QStatusBar::setVisible);
+    bindPreferenceSetting(ui->actionStatusBar, prefs, SETTING::SHOW_STATUS_BAR);
     bindPreferenceSetting(ui->actionGrid, prefs, SETTING::GRID);
     bindPreferenceSetting(ui->actionOnionPrev, prefs, SETTING::PREV_ONION);
     bindPreferenceSetting(ui->actionOnionNext, prefs, SETTING::NEXT_ONION);
@@ -423,7 +424,9 @@ void MainWindow2::setOpacity(int opacity)
 
 void MainWindow2::updateSaveState()
 {
-    setWindowModified(mEditor->currentBackup() != mBackupAtSave);
+    const bool hasUnsavedChanges = mEditor->currentBackup() != mBackupAtSave;
+    setWindowModified(hasUnsavedChanges);
+    ui->statusBar->updateModifiedStatus(hasUnsavedChanges);
 }
 
 void MainWindow2::clearRecentFilesList()
@@ -617,6 +620,7 @@ bool MainWindow2::openObject(const QString& strFilePath)
 
     setWindowTitle(mEditor->object()->filePath().prepend("[*]"));
     setWindowModified(false);
+    ui->statusBar->updateModifiedStatus(false);
 
     progress.setValue(progress.maximum());
 
@@ -1180,6 +1184,7 @@ void MainWindow2::setupKeyboardShortcuts()
     ui->actionGrid->setShortcut(cmdKeySeq(CMD_GRID));
     ui->actionOnionPrev->setShortcut(cmdKeySeq(CMD_ONIONSKIN_PREV));
     ui->actionOnionNext->setShortcut(cmdKeySeq(CMD_ONIONSKIN_NEXT));
+    ui->actionStatusBar->setShortcut(cmdKeySeq(CMD_TOGGLE_STATUS_BAR));
 
     ui->actionPlay->setShortcut(cmdKeySeq(CMD_PLAY));
     ui->actionLoop->setShortcut(cmdKeySeq(CMD_LOOP));
@@ -1437,10 +1442,13 @@ void MainWindow2::makeConnections(Editor* pEditor, ColorPaletteWidget* pColorPal
     connect(pColorManager, &ColorManager::colorNumberChanged, pColorPalette, &ColorPaletteWidget::selectColorNumber);
 }
 
-void MainWindow2::updateZoomLabel()
+void MainWindow2::makeConnections(Editor* editor, StatusBar *statusBar)
 {
-    qreal zoom = mEditor->view()->scaling() * 100.f;
-    mZoomLabel->setText(tr("Zoom: %0%").arg(zoom, 0, 'f', 1));
+    connect(editor->tools(), &ToolManager::toolChanged, statusBar, &StatusBar::updateToolStatus);
+    connect(editor->tools()->getTool(POLYLINE), &BaseTool::isActiveChanged, statusBar, &StatusBar::updateToolStatus);
+
+    connect(editor->view(), &ViewManager::viewChanged, statusBar, &StatusBar::updateZoomStatus);
+    connect(statusBar, &StatusBar::zoomChanged, editor->view(), &ViewManager::scale);
 }
 
 void MainWindow2::changePlayState(bool isPlaying)

app/src/mainwindow2.h

@@ -42,8 +42,8 @@ class ActionCommands;
 class ImportImageSeqDialog;
 class BackupElement;
 class LayerOpacityDialog;
-class QLabel;
 class PegBarAlignmentDialog;
+class StatusBar;
 enum class SETTING;
 
 
@@ -121,7 +121,6 @@ public slots:
     void createMenus();
     void setupKeyboardShortcuts();
     void clearKeyboardShortcuts();
-    void updateZoomLabel();
     bool loadMostRecent();
     bool tryLoadPreset();
 
@@ -144,6 +143,7 @@ public slots:
     void makeConnections(Editor*, DisplayOptionWidget*);
     void makeConnections(Editor*, ToolOptionWidget*);
     void makeConnections(Editor*, OnionSkinWidget*);
+    void makeConnections(Editor*, StatusBar*);
 
     bool tryRecoverUnsavedProject();
     void startProjectRecovery(int result);
@@ -177,9 +177,6 @@ public slots:
     // a hack for MacOS because closeEvent fires twice
     bool m2ndCloseEvent = false;
 
-    // statusbar widgets
-    QLabel* mZoomLabel = nullptr;
-
     // Whether to suppress the auto save dialog due to internal work
     bool mSuppressAutoSaveDialog = false;
 

app/src/shortcutspage.cpp

@@ -353,6 +353,7 @@ static QString getHumanReadableShortcutName(const QString& cmdName)
         {CMD_SAVE_AS, ShortcutsPage::tr("Save File As", "Shortcut")},
         {CMD_SAVE_FILE, ShortcutsPage::tr("Save File", "Shortcut")},
         {CMD_SELECT_ALL, ShortcutsPage::tr("Select All", "Shortcut")},
+        {CMD_TOGGLE_STATUS_BAR, ShortcutsPage::tr("Toggle Status Bar Visibility", "Shortcut")},
         {CMD_TOGGLE_COLOR_INSPECTOR, ShortcutsPage::tr("Toggle Color Inspector Window Visibility", "Shortcut")},
         {CMD_TOGGLE_COLOR_LIBRARY, ShortcutsPage::tr("Toggle Color Palette Window Visibility", "Shortcut")},
         {CMD_TOGGLE_COLOR_WHEEL, ShortcutsPage::tr("Toggle Color Box Window Visibility", "Shortcut")},