Catcrafts/Crafter.Graphics
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semi working wayland

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Jorijn van der Graaf 2025-11-17 00:44:45 +01:00
commit 4bb7219ccf
34 changed files with 13863 additions and 3121 deletions
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implementations/Crafter.Graphics-UiElement.cpp
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@ -18,16 +18,99 @@ License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
module;
#define STB_IMAGE_IMPLEMENTATION
#include "../lib/stb_image.h"
#include "../lib/stb_truetype.h"
module Crafter.Graphics:UiElement_impl;
import :UiElement;
import :Font;
import std;
using namespace Crafter;
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) {
}
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) {
}
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) {
}
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) {
std::filesystem::path abs = std::filesystem::absolute(image);
int xSize;
int ySize;
unsigned char* bgData = stbi_load(abs.string().c_str(), &xSize, &ySize, nullptr, 4);
bufferWidth = xSize;
bufferHeight = ySize;
buffer.resize(bufferWidth*bufferHeight);
for(std::uint_fast32_t x = 0; x < xSize; x++) {
for(std::uint_fast32_t y = 0; y < ySize; y++) {
std::uint_fast32_t idx = (x*ySize+y)*4;
buffer[x*ySize+y].r = bgData[idx];
buffer[x*ySize+y].g = bgData[idx+1];
buffer[x*ySize+y].b = bgData[idx+2];
buffer[x*ySize+y].a = bgData[idx+3];
}
}
}
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) {
RenderText(text, size, color, font);
}
void TextElement::RenderText(const std::string_view text, float size, Pixel_BU8_GU8_RU8_AU8 color, const Font& font) {
float scale = stbtt_ScaleForPixelHeight(&font.font, size);
int baseline = (int)(font.ascent * scale);
bufferWidth = 0;
bufferHeight = (int)((font.ascent -font.descent) * scale);
for (const char c : text) {
int advance, lsb;
stbtt_GetCodepointHMetrics(&font.font, c, &advance, &lsb);
bufferWidth += (int)(advance * scale);
}
buffer.resize(bufferWidth * bufferHeight);
int x = 0;
for (std::uint_fast32_t i = 0; i < text.size(); i++) {
int codepoint = text[i];
int ax;
int lsb;
stbtt_GetCodepointHMetrics(&font.font, codepoint, &ax, &lsb);
int c_x1, c_y1, c_x2, c_y2;
stbtt_GetCodepointBitmapBox(&font.font, codepoint, scale, scale, &c_x1, &c_y1, &c_x2, &c_y2);
int w = c_x2 - c_x1;
int h = c_y2 - c_y1;
std::vector<unsigned char> bitmap(w * h);
stbtt_MakeCodepointBitmap(&font.font, bitmap.data(), w, h, w, scale, scale, codepoint);
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
int bufIndex = ((baseline + j + c_y1) * bufferWidth + (x + i + c_x1));
unsigned char val = bitmap[j * w + i];
buffer[bufIndex] = {color.r, color.g, color.b, val};
}
}
x += (int)(ax * scale);
if (i + 1 < text.size()) {
x += (int)stbtt_GetCodepointKernAdvance(&font.font, codepoint, text[i+1] * scale);
}
}
}