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GUIMultilineLabel.cpp
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GUIMultilineLabel.cpp
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/*
* Copyright (C) 2019 Me and My Shadow
*
* This file is part of Me and My Shadow.
*
* Me and My Shadow is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Me and My Shadow is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
*/
#include "GUIMultilineLabel.h"
#include "ThemeManager.h"
void GUIMultilineLabel::refreshCache() {
//Check if the caption changed or the caption, if so we need to clear the (old) cache.
if (caption.compare(cachedCaption) != 0 || width <= 0 || width != cachedWidth || gravity != cachedGravity) {
//TODO: Only change alpha if only enabled changes.
//Free the cache.
cacheTex.reset(nullptr);
//And cache the new values.
cachedEnabled = enabled;
cachedCaption = caption;
cachedWidth = width;
cachedGravity = gravity;
//Finally resize the widget
if (autoWidth)
width = -1;
}
}
void GUIMultilineLabel::clearCache() {
//Free the cache.
cacheTex.reset(nullptr);
}
bool GUIMultilineLabel::handleEvents(SDL_Renderer&, int, int, bool, bool, bool processed){
return processed;
}
void GUIMultilineLabel::render(SDL_Renderer& renderer, int x, int y, bool draw){
//There's no need drawing the widget when it's invisible.
if (!visible)
return;
//Check if the enabled state changed or the caption, if so we need to clear the (old) cache.
refreshCache();
//Get the absolute x and y location.
x += left;
y += top;
//Update cache if needed.
if (!cacheTex){
SDL_Color color = objThemes.getTextColor(inDialog);
std::vector<std::string> lines;
bool temp = wrapper.wordWrap;
wrapper.font = fontText;
wrapper.maxWidth = width;
if (width <= 0) wrapper.wordWrap = false;
wrapper.addString(lines, caption);
wrapper.wordWrap = temp;
cacheTex = textureFromMultilineText(renderer, *fontText, lines, color, gravity);
const SDL_Rect size = rectFromTexture(cacheTex);
realWidth = size.w;
realHeight = size.h;
if (width <= 0) width = cachedWidth = size.w;
if (height <= 0) height = size.h;
}
//Align the text properly and draw it.
if (draw) {
const SDL_Rect size = rectFromTexture(cacheTex);
if (gravity == GUIGravityCenter)
gravityX = (width - size.w) / 2;
else if (gravity == GUIGravityRight)
gravityX = width - size.w;
else
gravityX = 0;
y += (height - size.h) / 2;
x += gravityX;
applyTexture(x, y, cacheTex, renderer);
}
}

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