mirror of
https://github.com/Maschell/libgui-sdl.git
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98 lines
3.0 KiB
C++
98 lines
3.0 KiB
C++
/****************************************************************************
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* Copyright (C) 2015 Dimok
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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****************************************************************************/
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#include <cstdarg>
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#include <SDL2/SDL_surface.h>
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#include <gui/GuiText.h>
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#include <gui/system/libgui_log.h>
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/**
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* Constructor for the GuiText class.
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*/
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GuiText::GuiText(const std::string& text, SDL_Color c, FC_Font* gFont) {
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this->text = text;
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this->color = c;
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this->fc_font = gFont;
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this->doUpdateTexture = true;
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this->texture.setParent(this);
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}
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GuiText::~GuiText() {
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delete textureData;
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}
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void GuiText::draw(Renderer *renderer) {
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if (!this->isVisible()) {
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return;
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}
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updateTexture(renderer);
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texture.draw(renderer);
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}
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void GuiText::process() {
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GuiElement::process();
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}
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void GuiText::setMaxWidth(float width) {
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this->maxWidth = width;
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// Rebuild the texture cache on next draw
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doUpdateTexture = true;
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}
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void GuiText::updateSize() {
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auto height = FC_GetColumnHeight(fc_font, maxWidth, text.c_str());
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auto width = FC_GetWidth(fc_font, text.c_str());
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width = width > maxWidth ? maxWidth : width;
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this->setSize(width, height);
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}
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void GuiText::updateTexture(Renderer *renderer) {
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if(doUpdateTexture) {
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updateSize();
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int tex_width = width == 0 ? 1 : (int) width;
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int tex_height = height == 0 ? 1 : (int)height;
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SDL_Texture *temp = SDL_CreateTexture(renderer->getRenderer(), renderer->getPixelFormat(), SDL_TEXTUREACCESS_TARGET, tex_width, tex_height);
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if (temp) {
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texture.setTexture(nullptr);
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delete textureData;
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textureData = new GuiTextureData(temp);
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textureData->setBlendMode(SDL_BLENDMODE_BLEND);
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texture.setTexture(textureData);
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// Set render target to texture
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SDL_SetRenderTarget(renderer->getRenderer(), temp);
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// Clear texture.
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SDL_SetRenderDrawColor(renderer->getRenderer(), 0, 0, 0, 0);
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SDL_RenderClear(renderer->getRenderer());
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// Draw text to texture
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FC_DrawColumn(fc_font, renderer->getRenderer(), 0, 0, maxWidth, text.c_str());
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// Restore render target
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SDL_SetRenderTarget(renderer->getRenderer(), nullptr);
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} else {
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LG_Log("Failed to create texture");
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}
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doUpdateTexture = false;
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}
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}
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