116 lines
No EOL
5.4 KiB
C++
116 lines
No EOL
5.4 KiB
C++
/*
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Crafter®.Graphics
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Copyright (C) 2025 Catcrafts®
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Catcrafts.net
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 3.0 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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module;
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#define STB_IMAGE_IMPLEMENTATION
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#include "../lib/stb_image.h"
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#include "../lib/stb_truetype.h"
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module Crafter.Graphics:UiElement_impl;
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import :UiElement;
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import :Font;
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import std;
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using namespace Crafter;
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UiElement::UiElement(float anchorX, float anchorY, float relativeWidth, float relativeHeight, float anchorOffsetX, float anchorOffsetY, float z, bool ignoreScaling) : anchorX(anchorX), anchorY(anchorY), relativeWidth(relativeWidth), relativeHeight(relativeHeight), anchorOffsetX(anchorOffsetX), anchorOffsetY(anchorOffsetY), z(z), useRelativeSize(true), ignoreScaling(ignoreScaling) {
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}
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UiElement::UiElement(float anchorX, float anchorY, std::uint32_t bufferWidth, std::uint32_t bufferHeight, std::uint32_t absoluteWidth, std::uint32_t absoluteHeight, float anchorOffsetX, float anchorOffsetY, float z, bool ignoreScaling) : anchorX(anchorX), anchorY(anchorY), bufferWidth(bufferWidth), bufferHeight(bufferHeight), absoluteWidth(absoluteWidth), absoluteHeight(absoluteHeight), anchorOffsetX(anchorOffsetX), anchorOffsetY(anchorOffsetY), z(z), buffer(bufferWidth*bufferHeight), useRelativeSize(false), ignoreScaling(ignoreScaling) {
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}
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UiElement::UiElement(float anchorX, float anchorY, std::uint32_t bufferWidth, std::uint32_t bufferHeight, float relativeWidth, float relativeHeight, float anchorOffsetX, float anchorOffsetY, float z, bool ignoreScaling) : anchorX(anchorX), anchorY(anchorY), bufferWidth(bufferWidth), bufferHeight(bufferHeight), relativeWidth(relativeWidth), relativeHeight(relativeHeight), anchorOffsetX(anchorOffsetX), anchorOffsetY(anchorOffsetY), z(z), buffer(bufferWidth*bufferHeight), useRelativeSize(true), ignoreScaling(ignoreScaling) {
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}
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UiElement::UiElement(const std::filesystem::path& image, float anchorX, float anchorY, float relativeWidth, float relativeHeight, float anchorOffsetX, float anchorOffsetY, float z, bool ignoreScaling) : anchorX(anchorX), anchorY(anchorY), relativeWidth(relativeWidth), relativeHeight(relativeHeight), anchorOffsetX(anchorOffsetX), anchorOffsetY(anchorOffsetY), z(z), useRelativeSize(true), ignoreScaling(ignoreScaling) {
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std::filesystem::path abs = std::filesystem::absolute(image);
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int xSize;
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int ySize;
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unsigned char* bgData = stbi_load(abs.string().c_str(), &xSize, &ySize, nullptr, 4);
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bufferWidth = xSize;
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bufferHeight = ySize;
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buffer.resize(bufferWidth*bufferHeight);
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for(std::uint_fast32_t x = 0; x < xSize; x++) {
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for(std::uint_fast32_t y = 0; y < ySize; y++) {
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std::uint_fast32_t idx = (x*ySize+y)*4;
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buffer[x*ySize+y].r = bgData[idx];
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buffer[x*ySize+y].g = bgData[idx+1];
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buffer[x*ySize+y].b = bgData[idx+2];
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buffer[x*ySize+y].a = bgData[idx+3];
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}
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}
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}
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TextElement::TextElement(const std::string_view text, float size, Pixel_BU8_GU8_RU8_AU8 color, const Font& font, float anchorX, float anchorY, float relativeWidth, float relativeHeight, float anchorOffsetX, float anchorOffsetY, float z, bool ignoreScaling) : UiElement(anchorX, anchorY, relativeWidth, relativeHeight, anchorOffsetX, anchorOffsetY, z, ignoreScaling) {
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RenderText(text, size, color, font);
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}
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void TextElement::RenderText(const std::string_view text, float size, Pixel_BU8_GU8_RU8_AU8 color, const Font& font) {
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float scale = stbtt_ScaleForPixelHeight(&font.font, size);
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int baseline = (int)(font.ascent * scale);
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bufferWidth = 0;
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bufferHeight = (int)((font.ascent -font.descent) * scale);
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for (const char c : text) {
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int advance, lsb;
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stbtt_GetCodepointHMetrics(&font.font, c, &advance, &lsb);
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bufferWidth += (int)(advance * scale);
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}
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buffer.resize(bufferWidth * bufferHeight);
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int x = 0;
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for (std::uint_fast32_t i = 0; i < text.size(); i++) {
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int codepoint = text[i];
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int ax;
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int lsb;
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stbtt_GetCodepointHMetrics(&font.font, codepoint, &ax, &lsb);
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int c_x1, c_y1, c_x2, c_y2;
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stbtt_GetCodepointBitmapBox(&font.font, codepoint, scale, scale, &c_x1, &c_y1, &c_x2, &c_y2);
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int w = c_x2 - c_x1;
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int h = c_y2 - c_y1;
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std::vector<unsigned char> bitmap(w * h);
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stbtt_MakeCodepointBitmap(&font.font, bitmap.data(), w, h, w, scale, scale, codepoint);
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for (int j = 0; j < h; j++) {
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for (int i = 0; i < w; i++) {
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int bufIndex = ((baseline + j + c_y1) * bufferWidth + (x + i + c_x1));
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unsigned char val = bitmap[j * w + i];
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buffer[bufIndex] = {color.r, color.g, color.b, val};
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}
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}
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x += (int)(ax * scale);
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if (i + 1 < text.size()) {
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x += (int)stbtt_GetCodepointKernAdvance(&font.font, codepoint, text[i+1] * scale);
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}
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}
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} |