mirror of
https://github.com/ByteWelder/Tactility.git
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7ea8c346b0
Graphics & rendering - Implement `binfont-module` to generate bitmap fonts on the device itself - Remove lodepng support from LVGL library and create `Modules/lodepng-module` to make the feature re-usable in non-LVGL apps too. Add binding functions for LVGL support. - Implement large icons for boot screen (Tactility and USB logos) - Remove unused asset files in `Data/` Boot - Split up `Tactility.cpp` and its `run()` function into various `Init*.cpp` files. - Re-implement `Boot.cpp` app as non-LVGL app - Boot app now has a `BootSequence.cpp` for the init code. - LVGL is now started when the Boot app finishes - Move more init logic into Boot app BLE - Don't allocate scan result buffers unless BLE is on - Allocate scan results in external memory if possible UX & UI - USB Settings app: remove border from the button container
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
// SPDX-License-Identifier: Apache-2.0
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#include <lvgl/binfont.h>
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#include <binfont/binfont.h>
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#include <tactility/memory.h>
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static bool get_glyph_dsc(const lv_font_t* font, lv_font_glyph_dsc_t* dsc, uint32_t letter, uint32_t letter_next) {
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struct BinFont* binfont = (struct BinFont*)font->dsc;
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BinFontGlyph glyph;
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if (!binfont_get_glyph(binfont, letter, &glyph)) {
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return false;
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}
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int32_t advance_x16 = (int32_t)glyph.advance_x16;
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BinFontGlyph next;
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if (font->kerning == LV_FONT_KERNING_NORMAL && letter_next != 0 && binfont_get_glyph(binfont, letter_next, &next)) {
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advance_x16 += binfont_get_kerning_x16(binfont, glyph.glyph_id, next.glyph_id);
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}
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dsc->adv_w = (uint16_t)((advance_x16 + 8) >> 4);
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dsc->box_w = glyph.width;
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dsc->box_h = glyph.height;
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dsc->ofs_x = glyph.x;
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dsc->ofs_y = glyph.y;
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dsc->stride = 0;
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dsc->format = LV_FONT_GLYPH_FORMAT_A8;
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dsc->is_placeholder = false;
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dsc->gid.index = glyph.glyph_id;
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return true;
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}
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static const void* get_glyph_bitmap(lv_font_glyph_dsc_t* dsc, lv_draw_buf_t* draw_buf) {
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if (dsc->box_w == 0 || dsc->box_h == 0) {
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return NULL;
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}
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struct BinFont* binfont = (struct BinFont*)dsc->resolved_font->dsc;
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const BinFontGlyph glyph = {
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.glyph_id = dsc->gid.index,
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.width = dsc->box_w,
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.height = dsc->box_h,
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};
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if (binfont_get_glyph_bitmap(binfont, &glyph, draw_buf->data, draw_buf->header.stride) != ERROR_NONE) {
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return NULL;
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}
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lv_draw_buf_flush_cache(draw_buf, NULL);
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return draw_buf;
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}
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lv_font_t* lvgl_binfont_create(struct BinFont* font) {
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lv_font_t* lv_font = memory_calloc(1, sizeof(lv_font_t));
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if (lv_font == NULL) {
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return NULL;
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}
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BinFontMetrics metrics;
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binfont_get_metrics(font, &metrics);
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lv_font->get_glyph_dsc = get_glyph_dsc;
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lv_font->get_glyph_bitmap = get_glyph_bitmap;
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lv_font->line_height = metrics.line_height;
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lv_font->base_line = metrics.base_line;
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lv_font->subpx = LV_FONT_SUBPX_NONE;
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lv_font->kerning = LV_FONT_KERNING_NORMAL;
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lv_font->underline_position = (int8_t)metrics.underline_position;
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lv_font->underline_thickness = (int8_t)metrics.underline_thickness;
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lv_font->dsc = font;
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return lv_font;
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}
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void lvgl_binfont_destroy(lv_font_t* font) {
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memory_free(font);
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}
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