92 lines
No EOL
4.2 KiB
C++
92 lines
No EOL
4.2 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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#include "../lib/stb_truetype.h"
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module Crafter.Graphics:UiElementTextBuffer_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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UiElementTextBuffer::UiElementTextBuffer(std::int_fast32_t anchorX, std::int_fast32_t anchorY, std::uint_fast32_t relativeWidth, std::uint_fast32_t relativeHeight, std::int_fast32_t anchorOffsetX, std::int_fast32_t anchorOffsetY, std::int_fast32_t z, bool ignoreScaling) : UiElementBufferBuffer(anchorX, anchorY, relativeWidth, relativeHeight, anchorOffsetX, anchorOffsetY, z, ignoreScaling) {
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}
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UiElementTextBuffer::UiElementTextBuffer(const std::string_view text, float size, Pixel_BU8_GU8_RU8_AU8 color, Font& font, std::int_fast32_t anchorX, std::int_fast32_t anchorY, std::uint_fast32_t relativeWidth, std::uint_fast32_t relativeHeight, std::int_fast32_t anchorOffsetX, std::int_fast32_t anchorOffsetY, std::int_fast32_t z, bool ignoreScaling) : UiElementBufferBuffer(anchorX, anchorY, relativeWidth, relativeHeight, anchorOffsetX, anchorOffsetY, z, ignoreScaling) {
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Render(text, size, color, font);
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}
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void UiElementTextBuffer::Render(const std::string_view text, float size, Pixel_BU8_GU8_RU8_AU8 color, Font& font) {
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buffer.clear();
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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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std::uint_fast32_t bufferWidth = 0;
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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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Create(bufferWidth, (font.ascent -font.descent) * scale);
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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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buffer[(baseline + j + c_y1) * bufferWidth + (x + i + c_x1)] = {color.r, color.g, color.b, bitmap[j * w + i]};
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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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}
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UiElementTextMouseBuffer::UiElementTextMouseBuffer(std::int_fast32_t anchorX, std::int_fast32_t anchorY, std::uint_fast32_t relativeWidth, std::uint_fast32_t relativeHeight, std::int_fast32_t anchorOffsetX, std::int_fast32_t anchorOffsetY, std::int_fast32_t z, bool ignoreScaling) : UiElementTextBuffer(anchorX, anchorY, relativeWidth, relativeHeight, anchorOffsetX, anchorOffsetY, z, ignoreScaling), UiElementMouse() {
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}
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UiElementTextMouseBuffer::UiElementTextMouseBuffer(const std::string_view text, float size, Pixel_BU8_GU8_RU8_AU8 color, Font& font, std::int_fast32_t anchorX, std::int_fast32_t anchorY, std::uint_fast32_t relativeWidth, std::uint_fast32_t relativeHeight, std::int_fast32_t anchorOffsetX, std::int_fast32_t anchorOffsetY, std::int_fast32_t z, bool ignoreScaling) : UiElementTextBuffer(text, size, color, font, anchorX, anchorY, relativeWidth, relativeHeight, anchorOffsetX, anchorOffsetY, z, ignoreScaling), UiElementMouse() {
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} |