Showing the changes to interface/src/ui/ScriptEditBox.cpp (1 of 8 files). Show all
Unified · Split
| @@ -0,0 +1,107 @@ | ||
| 1 | +// | |
| 2 | +// ScriptEditBox.cpp | |
| 3 | +// interface/src/ui | |
| 4 | +// | |
| 5 | +// Created by Thijs Wenker on 4/30/14. | |
| 6 | +// Copyright 2014 High Fidelity, Inc. | |
| 7 | +// | |
| 8 | +// Distributed under the Apache License, Version 2.0. | |
| 9 | +// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html | |
| 10 | +// | |
| 11 | + | |
| 12 | +#include "ScriptEditBox.h" | |
| 13 | +#include "ScriptLineNumberArea.h" | |
| 14 | +#include "Application.h" | |
| 15 | + | |
| 16 | +ScriptEditBox::ScriptEditBox(QWidget* parent) : | |
| 17 | + QPlainTextEdit(parent) | |
| 18 | +{ | |
| 19 | + _scriptLineNumberArea = new ScriptLineNumberArea(this); | |
| 20 | + | |
| 21 | + connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(updateLineNumberAreaWidth(int))); | |
| 22 | + connect(this, SIGNAL(updateRequest(QRect, int)), this, SLOT(updateLineNumberArea(QRect, int))); | |
| 23 | + connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(highlightCurrentLine())); | |
| 24 | + | |
| 25 | + updateLineNumberAreaWidth(0); | |
| 26 | + highlightCurrentLine(); | |
| 27 | +} | |
| 28 | + | |
| 29 | +int ScriptEditBox::lineNumberAreaWidth() { | |
| 30 | + int digits = 1; | |
| 31 | + const int SPACER_PIXELS = 3; | |
| 32 | + const int BASE_TEN = 10; | |
| 33 | + int max = qMax(1, blockCount()); | |
| 34 | + while (max >= BASE_TEN) { | |
| 35 | + max /= BASE_TEN; | |
| 36 | + ++digits; | |
| 37 | + } | |
| 38 | + return SPACER_PIXELS + fontMetrics().width(QLatin1Char('H')) * digits; | |
| 39 | +} | |
| 40 | + | |
| 41 | +void ScriptEditBox::updateLineNumberAreaWidth(int) { | |
| 42 | + setViewportMargins(lineNumberAreaWidth(), 0, 0, 0); | |
| 43 | +} | |
| 44 | + | |
| 45 | +void ScriptEditBox::updateLineNumberArea(const QRect& rect, int dy) { | |
| 46 | + if (dy) { | |
| 47 | + _scriptLineNumberArea->scroll(0, dy); | |
| 48 | + } else { | |
| 49 | + _scriptLineNumberArea->update(0, rect.y(), _scriptLineNumberArea->width(), rect.height()); | |
| 50 | + } | |
| 51 | + | |
| 52 | + if (rect.contains(viewport()->rect())) { | |
| 53 | + updateLineNumberAreaWidth(0); | |
| 54 | + } | |
| 55 | +} | |
| 56 | + | |
| 57 | +void ScriptEditBox::resizeEvent(QResizeEvent* e) { | |
| 58 | + QPlainTextEdit::resizeEvent(e); | |
| 59 | + | |
| 60 | + QRect cr = contentsRect(); | |
| 61 | + _scriptLineNumberArea->setGeometry(QRect(cr.left(), cr.top(), lineNumberAreaWidth(), cr.height())); | |
| 62 | +} | |
| 63 | + | |
| 64 | +void ScriptEditBox::highlightCurrentLine() { | |
| 65 | + QList<QTextEdit::ExtraSelection> extraSelections; | |
| 66 | + | |
| 67 | + if (!isReadOnly()) { | |
| 68 | + QTextEdit::ExtraSelection selection; | |
| 69 | + | |
| 70 | + QColor lineColor = QColor(Qt::gray).lighter(); | |
| 71 | + | |
| 72 | + selection.format.setBackground(lineColor); | |
| 73 | + selection.format.setProperty(QTextFormat::FullWidthSelection, true); | |
| 74 | + selection.cursor = textCursor(); | |
| 75 | + selection.cursor.clearSelection(); | |
| 76 | + extraSelections.append(selection); | |
| 77 | + } | |
| 78 | + | |
| 79 | + setExtraSelections(extraSelections); | |
| 80 | +} | |
| 81 | + | |
| 82 | +void ScriptEditBox::lineNumberAreaPaintEvent(QPaintEvent* event) | |
| 83 | +{ | |
| 84 | + QPainter painter(_scriptLineNumberArea); | |
| 85 | + painter.fillRect(event->rect(), Qt::lightGray); | |
| 86 | + QTextBlock block = firstVisibleBlock(); | |
| 87 | + int blockNumber = block.blockNumber(); | |
| 88 | + int top = (int) blockBoundingGeometry(block).translated(contentOffset()).top(); | |
| 89 | + int bottom = top + (int) blockBoundingRect(block).height(); | |
| 90 | + | |
| 91 | + while (block.isValid() && top <= event->rect().bottom()) { | |
| 92 | + if (block.isVisible() && bottom >= event->rect().top()) { | |
| 93 | + QFont font = painter.font(); | |
| 94 | + font.setBold(this->textCursor().blockNumber() == block.blockNumber()); | |
| 95 | + painter.setFont(font); | |
| 96 | + QString number = QString::number(blockNumber + 1); | |
| 97 | + painter.setPen(Qt::black); | |
| 98 | + painter.drawText(0, top, _scriptLineNumberArea->width(), fontMetrics().height(), | |
| 99 | + Qt::AlignRight, number); | |
| 100 | + } | |
| 101 | + | |
| 102 | + block = block.next(); | |
| 103 | + top = bottom; | |
| 104 | + bottom = top + (int) blockBoundingRect(block).height(); | |
| 105 | + ++blockNumber; | |
| 106 | + } | |
| 107 | +} | |