142 lines
5.3 KiB
C++
142 lines
5.3 KiB
C++
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#include "af-file-io.h"
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#include "af-memory.h"
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#define AF_FILE void*
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#define AF_FREAD(p, size, nmemb, stream) fileio_read(stream, p, nmemb)
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#define AF_FGETC(stream) fileio_getc(stream)
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#define AF_MALLOC(size) af_malloc(size)
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#define AF_REALLOC(p, size) af_realloc(p, size)
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#define AF_FREE(p) af_free(p)
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#define PP_MALLOC(size) af_malloc(size)
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#define PP_REALLOC(p, size) af_realloc(p, size)
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#define PP_FREE(p) af_free(p)
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#define AF_DEBUG(...) af_debug(__VA_ARGS__)
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#include "pretty-poly.h"
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#include "alright-fonts.h"
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#include "pico_graphics.hpp"
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pp_rect_t pp_contour_bounds(const pp_path_t *c);
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namespace pimoroni {
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// Integer point types cause compound error in transformations
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typedef float picovector_point_type;
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class PicoVector {
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private:
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static PicoGraphics *graphics;
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af_text_metrics_t text_metrics;
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static constexpr uint8_t alpha_map[4] {0, 128, 192, 255};
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public:
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PicoVector(PicoGraphics *graphics, void *mem = nullptr) {
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PicoVector::graphics = graphics;
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pp_tile_callback(PicoVector::tile_callback);
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pp_antialias(graphics->supports_alpha_blend() ? PP_AA_X4 : PP_AA_NONE);
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pp_clip(graphics->clip.x, graphics->clip.y, graphics->clip.w, graphics->clip.h);
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text_metrics.align = AF_H_ALIGN_LEFT;
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text_metrics.line_height = 110;
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text_metrics.letter_spacing = 95;
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text_metrics.word_spacing = 200;
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text_metrics.size = 48;
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// Shoud be set before rendering chars
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//text_metrics.transform = (pp_mat3_t *)af_malloc(sizeof(pp_mat3_t));
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//*text_metrics.transform = pp_mat3_identity();
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}
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static void tile_callback(const pp_tile_t *tile) {
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uint8_t *tile_data = tile->data;
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if(PicoVector::graphics->supports_alpha_blend() && _pp_antialias != PP_AA_NONE) {
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if (PicoVector::graphics->render_pico_vector_tile({tile->x, tile->y, tile->w, tile->h},
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tile->data,
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tile->stride,
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(uint8_t)_pp_antialias)) {
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return;
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}
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for(auto y = 0; y < tile->h; y++) {
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for(auto x = 0; x < tile->w; x++) {
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uint8_t alpha = *tile_data++;
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if (alpha >= 4) {
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PicoVector::graphics->set_pixel({x + tile->x, y + tile->y});
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} else if (alpha > 0) {
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alpha = alpha_map[alpha];
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PicoVector::graphics->set_pixel_alpha({x + tile->x, y + tile->y}, alpha);
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}
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}
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tile_data += tile->stride - tile->w;
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}
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} else {
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for(auto y = 0; y < tile->h; y++) {
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for(auto x = 0; x < tile->w; x++) {
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uint8_t alpha = *tile_data++;
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if (alpha) {
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PicoVector::graphics->set_pixel({x + tile->x, y + tile->y});
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}
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}
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tile_data += tile->stride - tile->w;
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}
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}
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}
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void set_antialiasing(pp_antialias_t antialias) {
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pp_antialias(antialias);
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}
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void set_font_size(unsigned int font_size) {
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text_metrics.size = font_size;
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}
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bool set_font(std::string_view font_path, unsigned int font_size) {
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if(text_metrics.face) {
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af_free(text_metrics.face->glyphs);
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af_free(text_metrics.face);
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}
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text_metrics.face = (af_face_t *)af_malloc(sizeof(af_face_t));
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//bool result = text_metrics.face.load(font_path);
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void* font = fileio_open(font_path.data());
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bool result = af_load_font_file(font, text_metrics.face);
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set_font_size(font_size);
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return result;
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}
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pp_point_t text(std::string_view text, pp_mat3_t *t);
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void transform(pp_path_t *path, pp_mat3_t *t);
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void transform(pp_poly_t *poly, pp_mat3_t *t);
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void rotate(pp_path_t *path, pp_point_t origin, float angle);
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void rotate(pp_poly_t *poly, pp_point_t origin, float angle);
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void translate(pp_path_t *path, pp_point_t translation);
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void translate(pp_poly_t *poly, pp_point_t translation);
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void draw(pp_poly_t *poly);
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void draw(pp_poly_t *poly, pp_mat3_t *t);
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void draw(pp_path_t *path) {
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pp_poly_t poly = {.paths = path, .count = 1};
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draw(&poly);
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};
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void draw(pp_path_t *path, pp_mat3_t *t) {
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pp_poly_t poly = {.paths = path, .count = 1};
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draw(&poly, t);
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};
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static constexpr size_t pretty_poly_buffer_size() {
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return 0;
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};
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};
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} |