kopia lustrzana https://github.com/browsh-org/browsh
156 wiersze
3.0 KiB
Go
156 wiersze
3.0 KiB
Go
package browsh
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func (i *inputBox) renderCursor() {
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if !i.isActive {
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return
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}
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if i.isSelection() {
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i.renderSelectionCursor()
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} else {
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i.renderSingleCursor()
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}
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}
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func (i *inputBox) isSelection() bool {
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return i.selectionStart > 0 || i.selectionEnd > 0
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}
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func (i *inputBox) renderSingleCursor() {
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x, y := i.getCoordsOfCursor()
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reverseCellColour(x, y)
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}
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func (i *inputBox) renderSelectionCursor() {
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var x, y int
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textLength := len(i.text)
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for index := 0; index < textLength; index++ {
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x, y = i.getCoordsOfIndex(index)
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if x >= i.selectionStart && x < i.selectionEnd {
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reverseCellColour(x, y)
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}
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}
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}
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func (i *inputBox) getCoordsOfCursor() (int, int) {
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var index int
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if i.isMultiLine() {
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index = i.xCursor
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} else {
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index = i.textCursor
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}
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return i.getCoordsOfIndex(index)
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}
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func (i *inputBox) getCoordsOfIndex(index int) (int, int) {
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xFrameOffset := CurrentTab.frame.xScroll
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yFrameOffset := CurrentTab.frame.yScroll - uiHeight
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if urlInputBox.isActive {
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xFrameOffset = 0
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yFrameOffset = 0
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}
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x := (i.X + index) - i.xScroll - xFrameOffset
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y := (i.Y + i.yCursor) - i.yScroll - yFrameOffset
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return x, y
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}
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func (i *inputBox) cursorLeft() {
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i.xCursor--
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i.textCursor--
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i.updateAllCursors()
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}
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func (i *inputBox) cursorRight() {
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i.xCursor++
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i.textCursor++
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i.updateAllCursors()
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}
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func (i *inputBox) cursorUp() {
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i.multiLiner.moveYCursorBy(-1)
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i.updateAllCursors()
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}
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func (i *inputBox) cursorDown() {
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i.multiLiner.moveYCursorBy(1)
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i.updateAllCursors()
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}
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func (i *inputBox) cursorBackspace() {
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if len(i.text) == 0 {
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return
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}
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if i.textCursor == 0 {
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return
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}
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start := i.text[:i.textCursor-1]
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end := i.text[i.textCursor:]
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i.text = append(start, end...)
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i.cursorLeft()
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i.sendInputBoxToBrowser()
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}
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func (i *inputBox) cursorInsertRune(theRune rune) {
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start := i.text[:i.textCursor]
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end := i.text[i.textCursor:]
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endWithRune := append([]rune{theRune}, end...)
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i.text = append(start, endWithRune...)
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i.cursorRight()
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i.sendInputBoxToBrowser()
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}
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func (i *inputBox) isCursorOverRightEdge() bool {
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return i.textCursor-i.xScroll >= i.Width
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}
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func (i *inputBox) isCursorOverLeftEdge() bool {
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return i.textCursor-i.xScroll <= -1
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}
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func (i *inputBox) isCursorOverTopEdge() bool {
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return i.yCursor-i.yScroll <= -1
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}
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func (i *inputBox) isCursorOverBottomEdge() bool {
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return i.yCursor-i.yScroll > i.Height
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}
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func (i *inputBox) putCursorAtEnd() {
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i.textCursor = len(urlInputBox.text)
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// TODO: Do for multiline
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}
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func (i *inputBox) updateAllCursors() {
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i.updateXYCursors()
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if i.isCursorOverLeftEdge() || !i.isBestFit() {
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i.xScrollBy(-1)
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}
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if i.isCursorOverTopEdge() {
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i.yScrollBy(-1)
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}
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if i.isCursorOverRightEdge() {
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i.xScrollBy(1)
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}
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if i.isCursorOverBottomEdge() {
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i.yScrollBy(1)
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}
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i.limitTextCursor()
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i.updateXYCursors()
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}
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func (i *inputBox) limitTextCursor() {
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if i.textCursor < 0 {
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i.textCursor = 0
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}
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if i.textCursor > len(i.text) {
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i.textCursor = len(i.text)
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}
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}
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func (i *inputBox) updateXYCursors() {
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if !i.isMultiLine() {
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return
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}
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i.multiLiner.updateCursor()
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i.renderCursor()
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}
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