666 lines
19 KiB
C++
666 lines
19 KiB
C++
#include "TextBox.hpp"
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#include "Label.hpp"
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#include "../../core/DrawContext.hpp"
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#include "../../core/Batch2D.hpp"
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#include "../../core/Font.hpp"
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#include "../../../assets/Assets.hpp"
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#include "../../../util/stringutil.hpp"
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#include "../../../window/Events.hpp"
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#include "../../../window/Window.hpp"
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using namespace gui;
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TextBox::TextBox(std::wstring placeholder, glm::vec4 padding)
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: Panel(glm::vec2(200,32), padding, 0),
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input(L""),
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placeholder(placeholder)
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{
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setOnUpPressed(nullptr);
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setOnDownPressed(nullptr);
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label = std::make_shared<Label>(L"");
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label->setSize(size-glm::vec2(padding.z+padding.x, padding.w+padding.y));
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add(label);
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setHoverColor(glm::vec4(0.05f, 0.1f, 0.2f, 0.75f));
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textInitX = label->getPos().x;
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scrollable = true;
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}
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void TextBox::draw(const DrawContext* pctx, Assets* assets) {
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Panel::draw(pctx, assets);
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font = assets->getFont(label->getFontName());
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if (!isFocused()) {
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return;
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}
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glm::vec2 pos = calcPos();
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glm::vec2 size = getSize();
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auto subctx = pctx->sub();
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subctx.setScissors(glm::vec4(pos.x, pos.y, size.x, size.y));
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const int lineHeight = font->getLineHeight() * label->getLineInterval();
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glm::vec2 lcoord = label->calcPos();
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lcoord.y -= 2;
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auto batch = pctx->getBatch2D();
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batch->texture(nullptr);
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if (editable && int((Window::time() - caretLastMove) * 2) % 2 == 0) {
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uint line = label->getLineByTextIndex(caret);
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uint lcaret = caret - label->getTextLineOffset(line);
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batch->setColor(glm::vec4(1.0f));
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int width = font->calcWidth(input, lcaret);
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batch->rect(lcoord.x + width, lcoord.y+label->getLineYOffset(line), 2, lineHeight);
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}
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if (selectionStart != selectionEnd) {
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uint startLine = label->getLineByTextIndex(selectionStart);
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uint endLine = label->getLineByTextIndex(selectionEnd);
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batch->setColor(glm::vec4(0.8f, 0.9f, 1.0f, 0.25f));
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int start = font->calcWidth(input, selectionStart-label->getTextLineOffset(startLine));
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int end = font->calcWidth(input, selectionEnd-label->getTextLineOffset(endLine));
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int lineY = label->getLineYOffset(startLine);
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if (startLine == endLine) {
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batch->rect(lcoord.x + start, lcoord.y+lineY, end-start, lineHeight);
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} else {
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batch->rect(lcoord.x + start, lcoord.y+lineY, label->getSize().x-start-padding.z-padding.x-2, lineHeight);
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for (uint i = startLine+1; i < endLine; i++) {
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batch->rect(lcoord.x, lcoord.y+label->getLineYOffset(i), label->getSize().x-padding.z-padding.x-2, lineHeight);
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}
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batch->rect(lcoord.x, lcoord.y+label->getLineYOffset(endLine), end, lineHeight);
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}
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}
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}
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void TextBox::drawBackground(const DrawContext* pctx, Assets*) {
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glm::vec2 pos = calcPos();
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auto batch = pctx->getBatch2D();
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batch->texture(nullptr);
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auto subctx = pctx->sub();
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subctx.setScissors(glm::vec4(pos.x, pos.y-0.5, size.x, size.y+1));
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if (valid) {
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if (isFocused() && !multiline) {
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batch->setColor(focusedColor);
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} else if (hover && !multiline) {
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batch->setColor(hoverColor);
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} else {
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batch->setColor(color);
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}
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} else {
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batch->setColor(invalidColor);
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}
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batch->rect(pos.x, pos.y, size.x, size.y);
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if (!isFocused() && supplier) {
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input = supplier();
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}
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if (isFocused() && multiline) {
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batch->setColor(glm::vec4(1, 1, 1, 0.1f));
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glm::vec2 lcoord = label->calcPos();
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lcoord.y -= 2;
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uint line = label->getLineByTextIndex(caret);
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while (label->isFakeLine(line)) {
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line--;
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}
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batch->setColor(glm::vec4(1, 1, 1, 0.05f));
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do {
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int lineY = label->getLineYOffset(line);
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int lineHeight = font->getLineHeight() * label->getLineInterval();
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batch->rect(lcoord.x, lcoord.y+lineY, label->getSize().x, lineHeight);
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line++;
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} while (line < label->getLinesNumber() && label->isFakeLine(line));
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}
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refreshLabel();
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}
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void TextBox::refreshLabel() {
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label->setColor(glm::vec4(input.empty() ? 0.5f : 1.0f));
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label->setText(getText());
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if (autoresize && font) {
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auto size = getSize();
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int newy = glm::min(static_cast<int>(parent->getSize().y),
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static_cast<int>(
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label->getLinesNumber() *
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label->getLineInterval() *
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font->getLineHeight()) + 1
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);
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if (newy != static_cast<int>(size.y)) {
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size.y = newy;
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setSize(size);
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if (positionfunc) {
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pos = positionfunc();
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}
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}
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}
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if (multiline && font) {
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setScrollable(true);
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uint height = label->getLinesNumber() * font->getLineHeight() * label->getLineInterval();
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label->setSize(glm::vec2(label->getSize().x, height));
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actualLength = height;
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} else {
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setScrollable(false);
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}
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}
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/// @brief Insert text at the caret. Also selected text will be erased
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/// @param text Inserting text
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void TextBox::paste(const std::wstring& text) {
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eraseSelected();
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if (caret >= input.length()) {
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input += text;
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} else {
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auto left = input.substr(0, caret);
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auto right = input.substr(caret);
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input = left + text + right;
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}
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input.erase(std::remove(input.begin(), input.end(), '\r'), input.end());
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refreshLabel();
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setCaret(caret + text.length());
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validate();
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}
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/// @brief Remove part of the text and move caret to start of the part
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/// @param start start of the part
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/// @param length length of part that will be removed
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void TextBox::erase(size_t start, size_t length) {
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size_t end = start + length;
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if (caret > start) {
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setCaret(caret - length);
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}
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auto left = input.substr(0, start);
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auto right = input.substr(end);
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input = left + right;
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}
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/// @brief Remove all selected text and reset selection
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/// @return true if erased anything
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bool TextBox::eraseSelected() {
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if (selectionStart == selectionEnd) {
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return false;
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}
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erase(selectionStart, selectionEnd-selectionStart);
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resetSelection();
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return true;
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}
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void TextBox::resetSelection() {
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selectionOrigin = 0;
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selectionStart = 0;
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selectionEnd = 0;
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}
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void TextBox::extendSelection(int index) {
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size_t normalized = normalizeIndex(index);
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selectionStart = std::min(selectionOrigin, normalized);
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selectionEnd = std::max(selectionOrigin, normalized);
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}
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size_t TextBox::getLineLength(uint line) const {
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size_t position = label->getTextLineOffset(line);
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size_t lineLength = label->getTextLineOffset(line+1)-position;
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if (lineLength == 0) {
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lineLength = input.length() - position + 1;
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}
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return lineLength;
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}
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size_t TextBox::getSelectionLength() const {
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return selectionEnd - selectionStart;
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}
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/// @brief Set scroll offset
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/// @param x scroll offset
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void TextBox::setTextOffset(uint x) {
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label->setPos(glm::vec2(textInitX - int(x), label->getPos().y));
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textOffset = x;
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}
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void TextBox::typed(unsigned int codepoint) {
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if (editable) {
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paste(std::wstring({(wchar_t)codepoint}));
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}
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}
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bool TextBox::validate() {
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if (validator) {
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valid = validator(getText());
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} else {
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valid = true;
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}
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return valid;
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}
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void TextBox::setValid(bool valid) {
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this->valid = valid;
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}
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bool TextBox::isValid() const {
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return valid;
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}
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void TextBox::setMultiline(bool multiline) {
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this->multiline = multiline;
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label->setMultiline(multiline);
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label->setVerticalAlign(multiline ? Align::top : Align::center);
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}
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bool TextBox::isMultiline() const {
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return multiline;
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}
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void TextBox::setTextWrapping(bool flag) {
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label->setTextWrapping(flag);
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}
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bool TextBox::isTextWrapping() const {
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return label->isTextWrapping();
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}
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void TextBox::setEditable(bool editable) {
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this->editable = editable;
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}
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bool TextBox::isEditable() const {
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return editable;
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}
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void TextBox::setOnEditStart(runnable oneditstart) {
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onEditStart = oneditstart;
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}
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void TextBox::setAutoResize(bool flag) {
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this->autoresize = flag;
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}
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bool TextBox::isAutoResize() const {
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return autoresize;
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}
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void TextBox::onFocus(GUI* gui) {
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Panel::onFocus(gui);
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if (onEditStart){
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setCaret(input.size());
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onEditStart();
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resetSelection();
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}
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}
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void TextBox::refresh() {
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Panel::refresh();
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label->setSize(size-glm::vec2(padding.z+padding.x, padding.w+padding.y));
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}
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/// @brief Clamp index to range [0, input.length()]
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/// @param index non-normalized index
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/// @return normalized index
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size_t TextBox::normalizeIndex(int index) {
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return std::min(input.length(), static_cast<size_t>(std::max(0, index)));
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}
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/// @brief Calculate index of character at defined screen X position
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/// @param x screen X position
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/// @param y screen Y position
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/// @return non-normalized character index
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int TextBox::calcIndexAt(int x, int y) const {
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if (font == nullptr)
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return 0;
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glm::vec2 lcoord = label->calcPos();
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uint line = label->getLineByYOffset(y-lcoord.y);
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line = std::min(line, label->getLinesNumber()-1);
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size_t lineLength = getLineLength(line);
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uint offset = 0;
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while (lcoord.x + font->calcWidth(input, offset) < x && offset < lineLength-1) {
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offset++;
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}
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return std::min(offset+label->getTextLineOffset(line), input.length());
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}
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inline std::wstring get_alphabet(wchar_t c) {
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std::wstring alphabet {c};
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if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z') || c == '_') {
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return L"abcdefghijklmnopqrstuvwxyz_ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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} else if (c >= '0' && c <= '9') {
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return L"0123456789";
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}
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return alphabet;
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}
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void TextBox::tokenSelectAt(int index) {
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int left = index;
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int right = index;
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std::wstring alphabet = get_alphabet(input.at(index));
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while (left >= 0) {
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if (alphabet.find(input.at(left)) == std::wstring::npos) {
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break;
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}
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left--;
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}
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while (static_cast<size_t>(right) < input.length()) {
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if (alphabet.find(input.at(right)) == std::wstring::npos) {
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break;
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}
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right++;
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}
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select(left+1, right);
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}
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void TextBox::doubleClick(GUI* gui, int x, int y) {
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UINode::doubleClick(gui, x, y);
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tokenSelectAt(normalizeIndex(calcIndexAt(x, y)-1));
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}
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void TextBox::click(GUI*, int x, int y) {
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int index = normalizeIndex(calcIndexAt(x, y));
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selectionStart = index;
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selectionEnd = index;
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selectionOrigin = index;
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}
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void TextBox::mouseMove(GUI*, int x, int y) {
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ssize_t index = calcIndexAt(x, y);
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setCaret(index);
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extendSelection(index);
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resetMaxLocalCaret();
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}
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void TextBox::resetMaxLocalCaret() {
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maxLocalCaret = caret - label->getTextLineOffset(label->getLineByTextIndex(caret));
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}
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void TextBox::stepLeft(bool shiftPressed, bool breakSelection) {
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uint previousCaret = this->caret;
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size_t caret = breakSelection ? selectionStart : this->caret;
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if (caret > 0) {
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if (caret > input.length()) {
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setCaret(input.length()-1);
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} else {
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setCaret(caret-1);
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}
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if (shiftPressed) {
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if (selectionStart == selectionEnd) {
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selectionOrigin = previousCaret;
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}
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extendSelection(this->caret);
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} else {
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resetSelection();
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}
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} else {
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setCaret(caret);
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resetSelection();
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}
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resetMaxLocalCaret();
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}
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void TextBox::stepRight(bool shiftPressed, bool breakSelection) {
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uint previousCaret = this->caret;
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size_t caret = breakSelection ? selectionEnd : this->caret;
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if (caret < input.length()) {
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setCaret(caret+1);
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caretLastMove = Window::time();
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if (shiftPressed) {
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if (selectionStart == selectionEnd) {
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selectionOrigin = previousCaret;
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}
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extendSelection(this->caret);
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} else {
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resetSelection();
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}
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} else {
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setCaret(caret);
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resetSelection();
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}
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resetMaxLocalCaret();
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}
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void TextBox::stepDefaultDown(bool shiftPressed, bool breakSelection) {
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uint previousCaret = this->caret;
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uint caret = breakSelection ? selectionEnd : this->caret;
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uint caretLine = label->getLineByTextIndex(caret);
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if (caretLine < label->getLinesNumber()-1) {
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uint offset = std::min(size_t(maxLocalCaret), getLineLength(caretLine+1)-1);
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setCaret(label->getTextLineOffset(caretLine+1) + offset);
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} else {
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setCaret(input.length());
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}
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if (shiftPressed) {
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if (selectionStart == selectionEnd) {
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selectionOrigin = previousCaret;
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}
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extendSelection(this->caret);
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} else {
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resetSelection();
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}
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}
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void TextBox::stepDefaultUp(bool shiftPressed, bool breakSelection) {
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uint previousCaret = this->caret;
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uint caret = breakSelection ? selectionStart : this->caret;
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uint caretLine = label->getLineByTextIndex(caret);
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if (caretLine > 0) {
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uint offset = std::min(size_t(maxLocalCaret), getLineLength(caretLine-1)-1);
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setCaret(label->getTextLineOffset(caretLine-1) + offset);
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} else {
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setCaret(0UL);
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}
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if (shiftPressed) {
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if (selectionStart == selectionEnd) {
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selectionOrigin = previousCaret;
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}
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extendSelection(this->caret);
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} else {
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resetSelection();
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}
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}
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void TextBox::performEditingKeyboardEvents(keycode key) {
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bool shiftPressed = Events::pressed(keycode::LEFT_SHIFT);
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bool breakSelection = getSelectionLength() != 0 && !shiftPressed;
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if (key == keycode::BACKSPACE) {
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if (!eraseSelected() && caret > 0 && input.length() > 0) {
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if (caret > input.length()) {
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caret = input.length();
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}
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input = input.substr(0, caret-1) + input.substr(caret);
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setCaret(caret-1);
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validate();
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}
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} else if (key == keycode::DELETE) {
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if (!eraseSelected() && caret < input.length()) {
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input = input.substr(0, caret) + input.substr(caret + 1);
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validate();
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}
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} else if (key == keycode::ENTER) {
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if (multiline) {
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paste(L"\n");
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} else {
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defocus();
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if (validate() && consumer) {
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consumer(label->getText());
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}
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}
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} else if (key == keycode::TAB) {
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paste(L" ");
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} else if (key == keycode::LEFT) {
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stepLeft(shiftPressed, breakSelection);
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} else if (key == keycode::RIGHT) {
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stepRight(shiftPressed, breakSelection);
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} else if (key == keycode::UP && onUpPressed) {
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onUpPressed();
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} else if (key == keycode::DOWN && onDownPressed) {
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onDownPressed();
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}
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}
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void TextBox::keyPressed(keycode key) {
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if (editable) {
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performEditingKeyboardEvents(key);
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}
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if (Events::pressed(keycode::LEFT_CONTROL)) {
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// Copy selected text to clipboard
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if (key == keycode::C || key == keycode::X) {
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std::string text = util::wstr2str_utf8(getSelection());
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if (!text.empty()) {
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Window::setClipboardText(text.c_str());
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}
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if (editable && key == keycode::X) {
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eraseSelected();
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}
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}
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// Paste text from clipboard
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if (key == keycode::V && editable) {
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const char* text = Window::getClipboardText();
|
|
if (text) {
|
|
paste(util::str2wstr_utf8(text));
|
|
}
|
|
}
|
|
// Select/deselect all
|
|
if (key == keycode::A) {
|
|
if (selectionStart == selectionEnd) {
|
|
select(0, input.length());
|
|
} else {
|
|
resetSelection();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void TextBox::select(int start, int end) {
|
|
if (end < start) {
|
|
std::swap(start, end);
|
|
}
|
|
start = normalizeIndex(start);
|
|
end = normalizeIndex(end);
|
|
|
|
selectionStart = start;
|
|
selectionEnd = end;
|
|
selectionOrigin = start;
|
|
setCaret(selectionEnd);
|
|
}
|
|
|
|
std::shared_ptr<UINode> TextBox::getAt(glm::vec2 pos, std::shared_ptr<UINode> self) {
|
|
return UINode::getAt(pos, self);
|
|
}
|
|
|
|
void TextBox::setOnUpPressed(runnable callback) {
|
|
if (callback == nullptr) {
|
|
onUpPressed = [this]() {
|
|
bool shiftPressed = Events::pressed(keycode::LEFT_SHIFT);
|
|
bool breakSelection = getSelectionLength() != 0 && !shiftPressed;
|
|
stepDefaultUp(shiftPressed, breakSelection);
|
|
};
|
|
} else {
|
|
onUpPressed = callback;
|
|
}
|
|
}
|
|
|
|
void TextBox::setOnDownPressed(runnable callback) {
|
|
if (callback == nullptr) {
|
|
onDownPressed = [this]() {
|
|
bool shiftPressed = Events::pressed(keycode::LEFT_SHIFT);
|
|
bool breakSelection = getSelectionLength() != 0 && !shiftPressed;
|
|
stepDefaultDown(shiftPressed, breakSelection);
|
|
};
|
|
} else {
|
|
onDownPressed = callback;
|
|
}
|
|
}
|
|
|
|
void TextBox::setTextSupplier(wstringsupplier supplier) {
|
|
this->supplier = supplier;
|
|
}
|
|
|
|
void TextBox::setTextConsumer(wstringconsumer consumer) {
|
|
this->consumer = consumer;
|
|
}
|
|
|
|
void TextBox::setTextValidator(wstringchecker validator) {
|
|
this->validator = validator;
|
|
}
|
|
|
|
void TextBox::setFocusedColor(glm::vec4 color) {
|
|
this->focusedColor = color;
|
|
}
|
|
|
|
glm::vec4 TextBox::getFocusedColor() const {
|
|
return focusedColor;
|
|
}
|
|
|
|
void TextBox::setErrorColor(glm::vec4 color) {
|
|
this->invalidColor = color;
|
|
}
|
|
|
|
glm::vec4 TextBox::getErrorColor() const {
|
|
return invalidColor;
|
|
}
|
|
|
|
std::wstring TextBox::getText() const {
|
|
if (input.empty())
|
|
return placeholder;
|
|
return input;
|
|
}
|
|
|
|
void TextBox::setText(const std::wstring value) {
|
|
this->input = value;
|
|
input.erase(std::remove(input.begin(), input.end(), '\r'), input.end());
|
|
}
|
|
|
|
std::wstring TextBox::getPlaceholder() const {
|
|
return placeholder;
|
|
}
|
|
|
|
void TextBox::setPlaceholder(const std::wstring& placeholder) {
|
|
this->placeholder = placeholder;
|
|
}
|
|
|
|
std::wstring TextBox::getSelection() const {
|
|
return input.substr(selectionStart, selectionEnd-selectionStart);
|
|
}
|
|
|
|
size_t TextBox::getCaret() const {
|
|
return caret;
|
|
}
|
|
|
|
void TextBox::setCaret(size_t position) {
|
|
this->caret = std::min(static_cast<size_t>(position), input.length());
|
|
caretLastMove = Window::time();
|
|
|
|
int width = label->getSize().x;
|
|
uint line = label->getLineByTextIndex(caret);
|
|
int offset = label->getLineYOffset(line) + contentOffset().y;
|
|
uint lineHeight = font->getLineHeight()*label->getLineInterval();
|
|
scrollStep = lineHeight;
|
|
if (offset < 0) {
|
|
scrolled(1);
|
|
} else if (offset >= getSize().y) {
|
|
offset -= getSize().y;
|
|
scrolled(-glm::ceil(offset/static_cast<double>(scrollStep)+0.5f));
|
|
}
|
|
uint lcaret = caret - label->getTextLineOffset(line);
|
|
int realoffset = font->calcWidth(input, lcaret)-int(textOffset)+2;
|
|
if (realoffset-width > 0) {
|
|
setTextOffset(textOffset + realoffset-width);
|
|
} else if (realoffset < 0) {
|
|
setTextOffset(std::max(textOffset + realoffset, 0LU));
|
|
}
|
|
}
|
|
|
|
void TextBox::setCaret(ssize_t position) {
|
|
if (position < 0) {
|
|
setCaret(static_cast<size_t>(input.length() + position + 1));
|
|
} else {
|
|
setCaret(static_cast<size_t>(position));
|
|
}
|
|
}
|