44 lines
1.8 KiB
C
44 lines
1.8 KiB
C
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#include "unifont.h"
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#include "graphics.h"
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#include <stddef.h>
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size_t strlen(const char *);
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void unifont_DrawChar(int posX, int posY, const HelosGraphics_Color *color, uint32_t codepoint) {
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const unsigned char *data = unifont_Data + codepoint * UNIFONT_CHAR_WIDTH * UNIFONT_CHAR_HEIGHT * 2 / 8;
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bool wide = unifont_IsCharDoublewidth(codepoint);
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int charWidth = UNIFONT_CHAR_WIDTH * (wide ? 2 : 1);
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for (int x = 0; x < charWidth; x++)
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for (int y = 0; y < UNIFONT_CHAR_HEIGHT; y++) {
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int pos = y * charWidth + x;
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if (data[pos / 8] & (1u << (7 - pos % 8)))
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graphics_SetPixel(posX + x, posY + y, color);
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}
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}
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void unifont_DrawString(int posX, int posY, const HelosGraphics_Color *color, const uint32_t *codepoints, int count) {
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for (const uint32_t *end = codepoints + count; codepoints != end; codepoints++) {
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unifont_DrawChar(posX, posY, color, *codepoints);
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posX += UNIFONT_CHAR_WIDTH * (unifont_IsCharDoublewidth(*codepoints) ? 2 : 1);
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}
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}
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void unifont_DrawStringUTF16(int posX, int posY, const HelosGraphics_Color *color, const uint16_t *codepoints, int count) {
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for (const uint16_t *end = codepoints + count; codepoints != end; codepoints++) {
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unifont_DrawChar(posX, posY, color, *codepoints);
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posX += UNIFONT_CHAR_WIDTH * (unifont_IsCharDoublewidth(*codepoints) ? 2 : 1);
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}
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}
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void unifont_DrawStringASCII(int posX, int posY, const HelosGraphics_Color *color, const char *codepoints, int count) {
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if (count == 0) {
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count = strlen(codepoints);
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}
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for (const char *end = codepoints + count; codepoints != end; codepoints++) {
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unifont_DrawChar(posX, posY, color, *codepoints);
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//posX += UNIFONT_CHAR_WIDTH * (unifont_IsCharDoublewidth(*codepoints) ? 2 : 1);
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posX += UNIFONT_CHAR_WIDTH; // visible ASCII chars are all single-width
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}
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}
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