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276 lines
6.7 KiB
276 lines
6.7 KiB
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <display.h>
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#include "display_draw.h"
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#include "fonts/fonts.h"
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#include "gl_draw.h"
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typedef struct {
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int16_t dst_x;
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int16_t dst_y;
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int16_t src_x;
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int16_t src_y;
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int16_t width;
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int16_t height;
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} gl_clip_t;
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static inline gl_clip_t gl_clip(gl_rect_t dst, const gl_bitmap_t* bitmap) {
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int16_t dst_x = dst.x0;
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int16_t dst_y = dst.y0;
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int16_t src_x = 0;
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int16_t src_y = 0;
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if (bitmap != NULL) {
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src_x += bitmap->offset.x;
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src_y += bitmap->offset.y;
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// Normalize negative x-offset of bitmap
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if (src_x < 0) {
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dst_x -= src_x;
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src_x = 0;
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}
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// Normalize negative y-offset of src bitmap
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if (src_y < 0) {
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dst_y -= src_y;
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src_y = 0;
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}
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}
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// Normalize negative top-left of destination rectangle
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if (dst_x < 0) {
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src_x -= dst_x;
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dst_x = 0;
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}
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if (dst_y < 0) {
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src_y -= dst_y;
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dst_y = 0;
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}
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// Calculate dimension of effective rectangle
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int16_t width = MIN(DISPLAY_RESX, dst.x1) - dst_x;
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int16_t height = MIN(DISPLAY_RESY, dst.y1) - dst_y;
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if (bitmap != NULL) {
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width = MIN(width, bitmap->size.x - src_x);
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height = MIN(height, bitmap->size.y - src_y);
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}
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gl_clip_t clip = {
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.dst_x = dst_x,
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.dst_y = dst_y,
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.src_x = src_x,
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.src_y = src_y,
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.width = width,
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.height = height,
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};
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return clip;
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}
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void gl_clear(void) {
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gl_bitblt_t bb = {
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// Destination bitmap
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.height = DISPLAY_RESX,
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.width = DISPLAY_RESY,
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.dst_row = NULL,
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.dst_x = 0,
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.dst_y = 0,
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.dst_stride = 0,
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// Source bitmap
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.src_fg = 0,
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.src_alpha = 255,
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};
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display_fill(&bb);
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}
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void gl_draw_bar(gl_rect_t rect, gl_color_t color) {
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gl_clip_t clip = gl_clip(rect, NULL);
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if (clip.width <= 0 || clip.height <= 0) {
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return;
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}
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gl_bitblt_t bb = {
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// Destination bitmap
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.height = clip.height,
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.width = clip.width,
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.dst_row = NULL,
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.dst_x = clip.dst_x,
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.dst_y = clip.dst_y,
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.dst_stride = 0,
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// Source bitmap
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.src_fg = color,
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.src_alpha = 255,
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};
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display_fill(&bb);
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}
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void gl_draw_bitmap(gl_rect_t rect, const gl_bitmap_t* bitmap) {
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gl_clip_t clip = gl_clip(rect, bitmap);
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if (clip.width <= 0 || clip.height <= 0) {
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return;
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}
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gl_bitblt_t bb = {
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// Destination bitmap
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.height = clip.height,
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.width = clip.width,
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.dst_row = NULL,
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.dst_x = clip.dst_x,
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.dst_y = clip.dst_y,
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.dst_stride = 0,
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// Source bitmap
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.src_row = (uint8_t*)bitmap->ptr + bitmap->stride * clip.src_y,
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.src_x = clip.src_x,
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.src_y = clip.src_y,
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.src_stride = bitmap->stride,
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.src_fg = bitmap->fg_color,
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.src_bg = bitmap->bg_color,
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.src_alpha = 255,
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};
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// Currently, we use `gl_draw_bitmap` exclusively for text rendering.
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// Therefore, we are including the variant of `display_copy_xxx()` that is
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// specifically needed for drawing glyphs in the format we are using
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// to save some space in the flash memory.
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#if TREZOR_FONT_BPP == 1
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if (bitmap->format == GL_FORMAT_MONO1P) {
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display_copy_mono1p(&bb);
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}
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#endif
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#if TREZOR_FONT_BPP == 4
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if (bitmap->format == GL_FORMAT_MONO4) {
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display_copy_mono4(&bb);
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}
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#endif
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}
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#if TREZOR_FONT_BPP == 1
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#define GLYPH_FORMAT GL_FORMAT_MONO1P
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#define GLYPH_STRIDE(w) (((w) + 7) / 8)
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#elif TREZOR_FONT_BPP == 2
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#error Unsupported TREZOR_FONT_BPP value
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#define GLYPH_FORMAT GL_FORMAT_MONO2
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#define GLYPH_STRIDE(w) (((w) + 3) / 4)
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#elif TREZOR_FONT_BPP == 4
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#define GLYPH_FORMAT GL_FORMAT_MONO4
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#define GLYPH_STRIDE(w) (((w) + 1) / 2)
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#elif TREZOR_FONT_BPP == 8
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#error Unsupported TREZOR_FONT_BPP value
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#define GLYPH_FORMAT GL_FORMAT_MONO8
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#define GLYPH_STRIDE(w) (w)
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#else
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#error Unsupported TREZOR_FONT_BPP value
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#endif
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#define GLYPH_WIDTH(g) ((g)[0])
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#define GLYPH_HEIGHT(g) ((g)[1])
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#define GLYPH_ADVANCE(g) ((g)[2])
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#define GLYPH_BEARING_X(g) ((g)[3])
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#define GLYPH_BEARING_Y(g) ((g)[4])
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#define GLYPH_DATA(g) ((void*)&(g)[5])
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void gl_draw_text(gl_offset_t pos, const char* text, size_t maxlen,
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const gl_text_attr_t* attr) {
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if (text == NULL) {
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return;
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}
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gl_bitmap_t bitmap = {
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.format = GLYPH_FORMAT,
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.fg_color = attr->fg_color,
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.bg_color = attr->bg_color,
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};
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int max_height = font_max_height(attr->font);
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int baseline = font_baseline(attr->font);
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for (int i = 0; i < maxlen; i++) {
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uint8_t ch = (uint8_t)text[i];
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if (ch == 0 || pos.x >= DISPLAY_RESX) {
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break;
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}
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const uint8_t* glyph = font_get_glyph(attr->font, ch);
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if (glyph == NULL) {
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continue;
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}
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bitmap.ptr = GLYPH_DATA(glyph);
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bitmap.stride = GLYPH_STRIDE(GLYPH_WIDTH(glyph));
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bitmap.size.x = GLYPH_WIDTH(glyph);
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bitmap.size.y = GLYPH_HEIGHT(glyph);
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bitmap.offset.x = -GLYPH_BEARING_X(glyph);
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bitmap.offset.y = -(max_height - baseline - GLYPH_BEARING_Y(glyph));
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gl_draw_bitmap(gl_rect(pos.x, pos.y, DISPLAY_RESX, DISPLAY_RESY), &bitmap);
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pos.x += GLYPH_ADVANCE(glyph);
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}
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}
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// ===============================================================
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// emulation of legacy functions
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void display_clear(void) { gl_clear(); }
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void display_bar(int x, int y, int w, int h, uint16_t c) {
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gl_draw_bar(gl_rect_wh(x, y, w, h), c);
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}
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void display_text(int x, int y, const char* text, int textlen, int font,
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uint16_t fg_color, uint16_t bg_color) {
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gl_text_attr_t attr = {
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.font = font,
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.fg_color = fg_color,
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.bg_color = bg_color,
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};
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size_t maxlen = textlen < 0 ? UINT32_MAX : textlen;
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gl_draw_text(gl_offset(x, y), text, maxlen, &attr);
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}
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void display_text_center(int x, int y, const char* text, int textlen, int font,
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uint16_t fg_color, uint16_t bg_color) {
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gl_text_attr_t attr = {
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.font = font,
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.fg_color = fg_color,
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.bg_color = bg_color,
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};
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size_t maxlen = textlen < 0 ? UINT32_MAX : textlen;
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int w = font_text_width(font, text, textlen);
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gl_draw_text(gl_offset(x - w / 2, y), text, maxlen, &attr);
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}
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