implement size indicator on resize

docs/demo/size_indicator.md

@@ -0,0 +1,5 @@
+# Size indicator
+
+On resize window with current terminal size will apear
+
+![type:video](../videos/size-indicator.mp4)

docs/features.md

@@ -25,3 +25,4 @@
 :material-check-bold:{.check-mark}  Builtin [Fira Code inspired progress bar](https://github.com/contour-terminal/contour/issues/521) support. <br/>
 :material-check-bold:{.check-mark}  Read-only mode, protecting against accidental user-input to the running application, such as <kbd>Ctrl</kbd>+<kbd>C</kbd>. <br/>
 :material-check-bold:{.check-mark}  [VT320 Host-programmable and Indicator statusline support](demo/statusline.md) <br/>
+:material-check-bold:{.check-mark}  [Size indicator on resize](demo/size_indicator.md) <br/>

metainfo.xml

@@ -64,6 +64,7 @@
       <li>Builtin Fira Code inspired progress bar support.</li>
       <li>Read-only mode, protecting against accidental user-input to the running application, such as Ctrl+C.</li>
       <li>VT320 Host-programmable and Indicator status line support.</li>
+      <li>Size indicator on resize.</li>
       <li>and much more ...</li>
     </ul>
   </description>
@@ -118,6 +119,7 @@
           <li>Adds config option `profile.*.bell` to adjust BEL behavior and fixes (#1162) and (#1163).</li>
           <li>Adds config option `profile.*.frozen_dec_modes` to permanently enable/disable certain DEC modes.</li>
           <li>Adds capital `A` and `I` keys to switch from normal mode back to insert mode, too.</li>
+          <li>Adds size indicator window on resize (#1203).</li>
         </ul>
       </description>
     </release>

mkdocs.yml

@@ -102,6 +102,7 @@ nav:
     - Line marks: demo/line-marks.md
     - Status line: demo/statusline.md
     - Input modes: input-modes.md
+    - Size indicator: demo/size_indicator.md
   - VT extensions:
     - vt-extensions/index.md
     - vt-extensions/clickable-links.md

src/contour/TerminalSession.cpp

@@ -827,6 +827,8 @@ bool TerminalSession::operator()(actions::DecreaseFontSize)
 {
     auto constexpr OnePt = text::font_size { 1.0 };
     setFontSize(profile().fonts.size - OnePt);
+
+    emit fontSizeChanged();
     // auto const currentFontSize = view().renderer().fontDescriptions().size;
     // auto const newFontSize = currentFontSize - OnePt;
     // setFontSize(newFontSize);
@@ -882,6 +884,8 @@ bool TerminalSession::operator()(actions::IncreaseFontSize)
     // auto const currentFontSize = view().renderer().fontDescriptions().size;
     // auto const newFontSize = currentFontSize + OnePt;
     // setFontSize(newFontSize);
+
+    emit fontSizeChanged();
     setFontSize(profile().fonts.size + OnePt);
     return true;
 }

src/contour/TerminalSession.h

@@ -64,6 +64,7 @@ class TerminalSession: public QAbstractItemModel, public terminal::Terminal::Eve
     Q_OBJECT
     Q_PROPERTY(int id READ id)
     Q_PROPERTY(int pageLineCount READ pageLineCount NOTIFY lineCountChanged)
+    Q_PROPERTY(int pageColumnsCount READ pageColumnsCount NOTIFY columnsCountChanged)
     Q_PROPERTY(int historyLineCount READ historyLineCount NOTIFY historyLineCountChanged)
     Q_PROPERTY(int scrollOffset READ scrollOffset WRITE setScrollOffset NOTIFY scrollOffsetChanged)
     Q_PROPERTY(QString title READ title WRITE setTitle NOTIFY titleChanged)
@@ -75,11 +76,22 @@ class TerminalSession: public QAbstractItemModel, public terminal::Terminal::Eve
     Q_PROPERTY(QColor backgroundColor READ getBackgroundColor NOTIFY backgroundColorChanged)
     Q_PROPERTY(bool isScrollbarRight READ getIsScrollbarRight NOTIFY isScrollbarRightChanged)
     Q_PROPERTY(bool isScrollbarVisible READ getIsScrollbarVisible NOTIFY isScrollbarVisibleChanged)
+    Q_PROPERTY(int fontSize READ getFontSize)
+    Q_PROPERTY(int upTime READ getUptime)
 
     // Q_PROPERTY(QString profileName READ profileName NOTIFY profileNameChanged)
 
   public:
     // {{{ Model property helper
+
+    int getUptime() const noexcept
+    {
+        auto const now = std::chrono::steady_clock::now();
+        auto const diff = std::chrono::duration_cast<std::chrono::seconds>(now - _startTime);
+        return diff.count();
+    }
+
+    int getFontSize() const noexcept { return static_cast<int>(_profile.fonts.size.pt); }
     float getOpacity() const noexcept
     {
         return static_cast<float>(_profile.backgroundOpacity) / std::numeric_limits<uint8_t>::max();
@@ -141,6 +153,8 @@ class TerminalSession: public QAbstractItemModel, public terminal::Terminal::Eve
 
     int pageLineCount() const noexcept { return unbox(_terminal.pageSize().lines); }
 
+    int pageColumnsCount() const noexcept { return unbox(_terminal.pageSize().columns); }
+
     int historyLineCount() const noexcept { return unbox(_terminal.currentScreen().historyLineCount()); }
 
     int scrollOffset() const noexcept { return unbox(terminal().viewport().scrollOffset()); }
@@ -317,6 +331,7 @@ class TerminalSession: public QAbstractItemModel, public terminal::Terminal::Eve
     void sessionClosed(TerminalSession&);
     void profileNameChanged(QString newValue);
     void lineCountChanged(int newValue);
+    void columnsCountChanged(int newValue);
     void historyLineCountChanged(int newValue);
     void scrollOffsetChanged(int newValue);
     void titleChanged(QString const& value);
@@ -333,6 +348,7 @@ class TerminalSession: public QAbstractItemModel, public terminal::Terminal::Eve
     void requestPermissionForBufferCapture();
     void requestPermissionForShowHostWritableStatusLine();
     void showNotification(QString const& title, QString const& content);
+    void fontSizeChanged();
 
   public slots:
     void onConfigReload();

src/contour/ui.template/Terminal.qml.in

@@ -28,6 +28,35 @@ ContourTerminal
         focus : false
     }
 
+
+
+    Rectangle {
+        Timer {
+            id: sizeWidgetTimer
+            interval: 1000;
+            running: false;
+            onTriggered: sizeWidget.visible = false
+        }
+        id : sizeWidget
+        anchors.centerIn: parent
+        border.width: 1
+        border.color: "black"
+        property int minWidth: 70
+        property int minHeight: 30
+        width:  vtWidget.width * 0.1 < minWidth ? minWidth : vtWidget.width * 0.1
+        height: vtWidget.height * 0.1 < minHeight ? minHeight : vtWidget.height * 0.1
+        color: "white"
+        visible : false
+        focus : false
+        Text {
+            id : sizeWidgetText
+            anchors.centerIn: parent
+            font.pointSize: vtWidget.fontSize
+            text :  "Size: " + session.pageColumnsCount.toString() + " x " + session.pageLineCount.toString()
+        }
+    }
+
+
     Image {
         id: backgroundImage
         width:  vtWidget.width
@@ -148,6 +177,15 @@ ContourTerminal
         vbar.position = (vt.historyLineCount - vt.scrollOffset) / totalLineCount;
     }
 
+    function updateSizeWidget() {
+        if (vtWidget.session.upTime > 1.0)
+        {
+            sizeWidget.visible = true
+            sizeWidgetTimer.running = true
+            sizeWidgetText.text = "Size: " + vtWidget.session.pageColumnsCount.toString() + " x " + vtWidget.session.pageLineCount.toString()
+        }
+    }
+
     onTerminated: {
         console.log("Client process terminated. Closing the window.");
         Window.window.close(); // https://stackoverflow.com/a/53829662/386670
@@ -159,6 +197,12 @@ ContourTerminal
         bellSoundEffect.play()
     }
 
+    function updateFontSize() {
+        sizeWidgetText.font.pointSize = vtWidget.session.fontSize
+        sizeWidget.minWidth = vtWidget.session.fontSize * 10
+        sizeWidget.minHeight = vtWidget.session.fontSize * 3
+    }
+
     onSessionChanged: (s) => {
         let vt = vtWidget.session;
 
@@ -181,6 +225,10 @@ ContourTerminal
         // Update the scrollbar's position whenever the VT's viewport changes.
         vt.onScrollOffsetChanged.connect(updateScrollBarPosition);
 
+        // Update font size of elements
+        vt.fontSizeChanged.connect(updateFontSize);
+        updateFontSize();
+
         // Permission-wall related hooks.
         vt.requestPermissionForFontChange.connect(requestFontChangeDialog.open);
         vt.requestPermissionForBufferCapture.connect(requestBufferCaptureDialog.open);

src/contour/ui.template/main.qml.in

@@ -39,11 +39,13 @@ ApplicationWindow
     onWidthChanged : function() {
         vtui.width = width
         vtui.session.requestWindowResize(width, height)
+        vtui.updateSizeWidget()
     }
 
     onHeightChanged: function() {
         vtui.height = height
         vtui.session.requestWindowResize(width, height)
+        vtui.updateSizeWidget()
     }
 
     function applyOpacity() {