mirror of
https://github.com/mappu/miqt.git
synced 2024-12-22 17:08:38 +00:00
137 lines
2.9 KiB
Go
137 lines
2.9 KiB
Go
package main
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import (
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"fmt"
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"io/ioutil"
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"os"
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"strings"
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"github.com/mappu/miqt/qt"
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)
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const sampleContent = `# Markdown Outliner
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This is sample markdown content.
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## Features
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- You can use the outline on the left to jump to parts of the document
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- Demonstrates use of the MIQT library`
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type AppWindow struct {
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w *qt.QMainWindow
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cw *qt.QWidget
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outline *qt.QListWidget
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textArea *qt.QTextEdit
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}
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func NewAppWindow() *AppWindow {
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ret := AppWindow{}
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ret.w = qt.NewQMainWindow()
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ret.w.SetWindowTitle("Markdown Outliner")
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// Menu
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mnu := qt.NewQMenuBar()
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fileMenu := mnu.AddMenuWithTitle("&File")
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open := fileMenu.AddAction("Open...")
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open.SetShortcut(qt.NewQKeySequence2("Ctrl+O"))
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open.OnTriggered1(ret.handleFileOpen)
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fileMenu.AddSeparator()
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exit := fileMenu.AddAction("Exit")
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exit.OnTriggered1(func() {
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os.Exit(0)
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})
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helpMenu := mnu.AddMenuWithTitle("&Help")
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aboutQt := helpMenu.AddAction("About Qt")
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aboutQt.SetShortcut(qt.NewQKeySequence2("F1"))
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aboutQt.OnTriggered1(func() {
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qt.QApplication_AboutQt()
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})
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ret.w.SetMenuBar(mnu)
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// Main widgets
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ret.cw = qt.NewQWidget2(ret.w.QWidget)
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ret.w.SetCentralWidget(ret.cw)
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layout := qt.NewQHBoxLayout2(ret.cw)
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panes := qt.NewQSplitter()
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layout.AddWidget(panes.QWidget)
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ret.outline = qt.NewQListWidget2(ret.cw)
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panes.AddWidget(ret.outline.QWidget)
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ret.outline.OnCurrentItemChanged(ret.handleJumpToBookmark)
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ret.textArea = qt.NewQTextEdit3(ret.cw)
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ret.textArea.OnTextChanged(ret.handleTextChanged)
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ret.textArea.SetText(sampleContent)
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panes.AddWidget(ret.textArea.QWidget)
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panes.SetSizes([]int{250, 550})
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return &ret
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}
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const lineNumberRole = 0x0100 // Qt::UserDataRole
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func (a *AppWindow) handleFileOpen() {
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fname := qt.QFileDialog_GetOpenFileName4(a.w.QWidget, "Open markdown file...", "", "Markdown files (*.md *.txt);;All Files (*)")
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if fname == "" {
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return
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}
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contents, err := ioutil.ReadFile(fname)
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if err != nil {
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qt.QMessageBox_Warning(a.w.QWidget, "Failed to open file", fmt.Sprintf("Opening file %q: %v", fname, err))
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return
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}
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a.textArea.SetText(string(contents))
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}
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func (a *AppWindow) handleTextChanged() {
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content := a.textArea.ToPlainText()
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a.updateOutlineForContent(content)
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}
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func (a *AppWindow) updateOutlineForContent(content string) {
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a.outline.Clear()
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lines := strings.Split(content, "\n")
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for lineNumber, line := range lines {
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if strings.HasPrefix(line, `#`) {
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bookmark := qt.NewQListWidgetItem7(line, a.outline)
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bookmark.SetData(lineNumberRole, qt.NewQVariant5(lineNumber))
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}
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}
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}
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func (a *AppWindow) handleJumpToBookmark() {
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itm := a.outline.CurrentItem()
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if itm == nil {
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return
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}
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lineNumber := itm.Data(lineNumberRole).ToInt()
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targetBlock := a.textArea.Document().FindBlockByLineNumber(lineNumber)
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a.textArea.SetTextCursor(qt.NewQTextCursor4(targetBlock))
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a.textArea.SetFocus()
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}
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func main() {
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qt.NewQApplication(os.Args)
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app := NewAppWindow()
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app.w.Show()
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qt.QApplication_Exec()
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}
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