forked from forks/qmk_firmware
464 lines
21 KiB
C
464 lines
21 KiB
C
// Copyright 2021 Nick Brassel (@tzarc)
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#include <quantum.h>
|
|
#include <utf8.h>
|
|
|
|
#include "qp_internal.h"
|
|
#include "qp_draw.h"
|
|
#include "qp_comms.h"
|
|
#include "qff.h"
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// QFF font handles
|
|
|
|
typedef struct qff_font_handle_t {
|
|
painter_font_desc_t base;
|
|
bool validate_ok;
|
|
bool has_ascii_table;
|
|
uint16_t num_unicode_glyphs;
|
|
uint8_t bpp;
|
|
bool has_palette;
|
|
painter_compression_t compression_scheme;
|
|
union {
|
|
qp_stream_t stream;
|
|
qp_memory_stream_t mem_stream;
|
|
#ifdef QP_STREAM_HAS_FILE_IO
|
|
qp_file_stream_t file_stream;
|
|
#endif // QP_STREAM_HAS_FILE_IO
|
|
};
|
|
#if QUANTUM_PAINTER_LOAD_FONTS_TO_RAM
|
|
bool owns_buffer;
|
|
void *buffer;
|
|
#endif // QUANTUM_PAINTER_LOAD_FONTS_TO_RAM
|
|
} qff_font_handle_t;
|
|
|
|
static qff_font_handle_t font_descriptors[QUANTUM_PAINTER_NUM_FONTS] = {0};
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Helper: load font from stream
|
|
|
|
static painter_font_handle_t qp_load_font_internal(bool (*stream_factory)(qff_font_handle_t *font, void *arg), void *arg) {
|
|
qp_dprintf("qp_load_font: entry\n");
|
|
qff_font_handle_t *font = NULL;
|
|
|
|
// Find a free slot
|
|
for (int i = 0; i < QUANTUM_PAINTER_NUM_FONTS; ++i) {
|
|
if (!font_descriptors[i].validate_ok) {
|
|
font = &font_descriptors[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Drop out if not found
|
|
if (!font) {
|
|
qp_dprintf("qp_load_font: fail (no free slot)\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!stream_factory(font, arg)) {
|
|
qp_dprintf("qp_load_font: fail (could not create stream)\n");
|
|
return NULL;
|
|
}
|
|
|
|
// Now that we know the length, validate the input data
|
|
if (!qff_validate_stream(&font->stream)) {
|
|
qp_dprintf("qp_load_font: fail (failed validation)\n");
|
|
return NULL;
|
|
}
|
|
|
|
#if QUANTUM_PAINTER_LOAD_FONTS_TO_RAM
|
|
// Clear out any existing data
|
|
font->owns_buffer = false;
|
|
font->buffer = NULL;
|
|
|
|
void *ram_buffer = malloc(font->mem_stream.length);
|
|
if (ram_buffer == NULL) {
|
|
qp_dprintf("qp_load_font: could not allocate enough RAM for font, falling back to original\n");
|
|
} else {
|
|
do {
|
|
// Copy the data into RAM
|
|
if (qp_stream_read(ram_buffer, 1, font->mem_stream.length, &font->mem_stream) != font->mem_stream.length) {
|
|
qp_dprintf("qp_load_font: could not copy from flash to RAM, falling back to original\n");
|
|
break;
|
|
}
|
|
|
|
// Create the new stream with the new buffer
|
|
font->buffer = ram_buffer;
|
|
font->owns_buffer = true;
|
|
font->mem_stream = qp_make_memory_stream(font->buffer, font->mem_stream.length);
|
|
} while (0);
|
|
}
|
|
|
|
// Free the buffer if we were unable to recreate the RAM copy.
|
|
if (ram_buffer != NULL && !font->owns_buffer) {
|
|
free(ram_buffer);
|
|
}
|
|
#endif // QUANTUM_PAINTER_LOAD_FONTS_TO_RAM
|
|
|
|
// Read the info (parsing already successful above, no need to check return value)
|
|
qff_read_font_descriptor(&font->stream, &font->base.line_height, &font->has_ascii_table, &font->num_unicode_glyphs, &font->bpp, &font->has_palette, &font->compression_scheme, NULL);
|
|
|
|
if (!qp_internal_bpp_capable(font->bpp)) {
|
|
qp_dprintf("qp_load_font: fail (image bpp too high (%d), check QUANTUM_PAINTER_SUPPORTS_256_PALETTE or QUANTUM_PAINTER_SUPPORTS_NATIVE_COLORS)\n", (int)font->bpp);
|
|
qp_close_font((painter_font_handle_t)font);
|
|
return NULL;
|
|
}
|
|
|
|
// Validation success, we can return the handle
|
|
font->validate_ok = true;
|
|
qp_dprintf("qp_load_font: ok\n");
|
|
return (painter_font_handle_t)font;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Quantum Painter External API: qp_load_font_mem
|
|
|
|
static inline bool font_mem_stream_factory(qff_font_handle_t *font, void *arg) {
|
|
void *buffer = arg;
|
|
|
|
// Assume we can read the graphics descriptor
|
|
font->mem_stream = qp_make_memory_stream(buffer, sizeof(qff_font_descriptor_v1_t));
|
|
|
|
// Update the length of the stream to match, and rewind to the start
|
|
font->mem_stream.length = qff_get_total_size(&font->stream);
|
|
font->mem_stream.position = 0;
|
|
|
|
return true;
|
|
}
|
|
|
|
painter_font_handle_t qp_load_font_mem(const void *buffer) {
|
|
return qp_load_font_internal(font_mem_stream_factory, (void *)buffer);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Quantum Painter External API: qp_close_font
|
|
|
|
bool qp_close_font(painter_font_handle_t font) {
|
|
qff_font_handle_t *qff_font = (qff_font_handle_t *)font;
|
|
if (!qff_font->validate_ok) {
|
|
qp_dprintf("qp_close_font: fail (invalid font)\n");
|
|
return false;
|
|
}
|
|
|
|
#if QUANTUM_PAINTER_LOAD_FONTS_TO_RAM
|
|
// Nuke the buffer, if required
|
|
if (qff_font->owns_buffer) {
|
|
free(qff_font->buffer);
|
|
qff_font->buffer = NULL;
|
|
qff_font->owns_buffer = false;
|
|
}
|
|
#endif // QUANTUM_PAINTER_LOAD_FONTS_TO_RAM
|
|
|
|
// Free up this font for use elsewhere.
|
|
qp_stream_close(&qff_font->stream);
|
|
qff_font->validate_ok = false;
|
|
return true;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Helpers
|
|
|
|
// Callback to be invoked for each codepoint detected in the UTF8 input string
|
|
typedef bool (*code_point_handler)(qff_font_handle_t *qff_font, uint32_t code_point, uint8_t width, uint8_t height, void *cb_arg);
|
|
|
|
// Helper that sets up the palette (if required) and returns the offset in the stream that the data starts
|
|
static inline bool qp_drawtext_prepare_font_for_render(painter_device_t device, qff_font_handle_t *qff_font, qp_pixel_t fg_hsv888, qp_pixel_t bg_hsv888, uint32_t *data_offset) {
|
|
painter_driver_t *driver = (painter_driver_t *)device;
|
|
|
|
// Drop out if we can't actually place the data we read out anywhere
|
|
if (!data_offset) {
|
|
qp_dprintf("Failed to prepare stream for read, output info buffer unavailable\n");
|
|
return false;
|
|
}
|
|
|
|
// Work out where we're reading from
|
|
uint32_t offset = sizeof(qff_font_descriptor_v1_t);
|
|
if (qff_font->has_ascii_table) {
|
|
offset += sizeof(qff_ascii_glyph_table_v1_t);
|
|
}
|
|
if (qff_font->num_unicode_glyphs > 0) {
|
|
offset += sizeof(qff_unicode_glyph_table_v1_t) + (qff_font->num_unicode_glyphs * 6);
|
|
}
|
|
|
|
// Handle palette if needed
|
|
const uint16_t palette_entries = 1u << qff_font->bpp;
|
|
bool needs_pixconvert = false;
|
|
if (qff_font->has_palette) {
|
|
// If this font has a palette, we need to read it out and set up the pixel lookup table
|
|
qp_stream_setpos(&qff_font->stream, offset);
|
|
if (!qp_internal_load_qgf_palette(&qff_font->stream, qff_font->bpp)) {
|
|
return false;
|
|
}
|
|
|
|
// Skip this block, as far as offset calculations go
|
|
offset += sizeof(qgf_palette_v1_t) + (palette_entries * 3);
|
|
needs_pixconvert = true;
|
|
} else {
|
|
// Interpolate from fg/bg
|
|
int16_t palette_entries = 1 << qff_font->bpp;
|
|
needs_pixconvert = qp_internal_interpolate_palette(fg_hsv888, bg_hsv888, palette_entries);
|
|
}
|
|
|
|
if (needs_pixconvert) {
|
|
// Convert the palette to native format
|
|
if (!driver->driver_vtable->palette_convert(device, palette_entries, qp_internal_global_pixel_lookup_table)) {
|
|
qp_dprintf("qp_drawtext_recolor: fail (could not convert pixels to native)\n");
|
|
qp_comms_stop(device);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
*data_offset = offset;
|
|
return true;
|
|
}
|
|
|
|
static inline bool qp_drawtext_prepare_glyph_for_render(qff_font_handle_t *qff_font, uint32_t code_point, uint8_t *width) {
|
|
if (code_point >= 0x20 && code_point < 0x7F && qff_font->has_ascii_table) {
|
|
// Do ascii table
|
|
qff_ascii_glyph_v1_t glyph_info;
|
|
uint32_t glyph_info_offset = sizeof(qff_font_descriptor_v1_t) // Skip the font descriptor
|
|
+ sizeof(qgf_block_header_v1_t) // Skip the ascii table header
|
|
+ (code_point - 0x20) * sizeof(qff_ascii_glyph_v1_t); // Jump direct to the data offset based on the glyph index
|
|
if (qp_stream_setpos(&qff_font->stream, glyph_info_offset) < 0) {
|
|
qp_dprintf("Failed to set stream position while reading ascii glyph info\n");
|
|
return false;
|
|
}
|
|
|
|
if (qp_stream_read(&glyph_info, sizeof(qff_ascii_glyph_v1_t), 1, &qff_font->stream) != 1) {
|
|
qp_dprintf("Failed to read glyph info\n");
|
|
return false;
|
|
}
|
|
|
|
uint8_t glyph_width = (uint8_t)(glyph_info.value & QFF_GLYPH_WIDTH_MASK);
|
|
uint32_t glyph_offset = ((glyph_info.value & QFF_GLYPH_OFFSET_MASK) >> QFF_GLYPH_WIDTH_BITS);
|
|
uint32_t data_offset = sizeof(qff_font_descriptor_v1_t) // Skip the font descriptor
|
|
+ sizeof(qff_ascii_glyph_table_v1_t) // Skip the ascii table
|
|
+ (qff_font->num_unicode_glyphs > 0 ? (sizeof(qff_unicode_glyph_table_v1_t) + (qff_font->num_unicode_glyphs * sizeof(qff_unicode_glyph_v1_t))) : 0) // Skip the unicode table
|
|
+ (qff_font->has_palette ? (sizeof(qgf_palette_v1_t) + ((1 << qff_font->bpp) * sizeof(qgf_palette_entry_v1_t))) : 0) // Skip the palette
|
|
+ sizeof(qgf_block_header_v1_t) // Skip the data block header
|
|
+ glyph_offset; // Jump to the specified glyph offset
|
|
|
|
if (qp_stream_setpos(&qff_font->stream, data_offset) < 0) {
|
|
qp_dprintf("Failed to set stream position while preparing ascii glyph data\n");
|
|
return false;
|
|
}
|
|
|
|
*width = glyph_width;
|
|
return true;
|
|
} else {
|
|
// Do unicode table, which may include singular ascii glyphs if full ascii table isn't specified
|
|
uint32_t glyph_info_offset = sizeof(qff_font_descriptor_v1_t) // Skip the font descriptor
|
|
+ (qff_font->has_ascii_table ? sizeof(qff_ascii_glyph_table_v1_t) : 0) // Skip the ascii table
|
|
+ sizeof(qgf_block_header_v1_t); // Skip the unicode block header
|
|
|
|
if (qp_stream_setpos(&qff_font->stream, glyph_info_offset) < 0) {
|
|
qp_dprintf("Failed to set stream position while preparing glyph data\n");
|
|
return false;
|
|
}
|
|
|
|
qff_unicode_glyph_v1_t glyph_info;
|
|
for (uint16_t i = 0; i < qff_font->num_unicode_glyphs; ++i) {
|
|
if (qp_stream_read(&glyph_info, sizeof(qff_unicode_glyph_v1_t), 1, &qff_font->stream) != 1) {
|
|
qp_dprintf("Failed to set stream position while reading unicode glyph info\n");
|
|
return false;
|
|
}
|
|
|
|
if (glyph_info.code_point == code_point) {
|
|
uint8_t glyph_width = (uint8_t)(glyph_info.value & QFF_GLYPH_WIDTH_MASK);
|
|
uint32_t glyph_offset = ((glyph_info.value & QFF_GLYPH_OFFSET_MASK) >> QFF_GLYPH_WIDTH_BITS);
|
|
uint32_t data_offset = sizeof(qff_font_descriptor_v1_t) // Skip the font descriptor
|
|
+ sizeof(qff_ascii_glyph_table_v1_t) // Skip the ascii table
|
|
+ (qff_font->num_unicode_glyphs > 0 ? (sizeof(qff_unicode_glyph_table_v1_t) + (qff_font->num_unicode_glyphs * sizeof(qff_unicode_glyph_v1_t))) : 0) // Skip the unicode table
|
|
+ (qff_font->has_palette ? (sizeof(qgf_palette_v1_t) + ((1 << qff_font->bpp) * sizeof(qgf_palette_entry_v1_t))) : 0) // Skip the palette
|
|
+ sizeof(qgf_block_header_v1_t) // Skip the data block header
|
|
+ glyph_offset; // Jump to the specified glyph offset
|
|
|
|
if (qp_stream_setpos(&qff_font->stream, data_offset) < 0) {
|
|
qp_dprintf("Failed to set stream position while preparing unicode glyph data\n");
|
|
return false;
|
|
}
|
|
|
|
*width = glyph_width;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Not found
|
|
qp_dprintf("Failed to find unicode glyph info\n");
|
|
return false;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Function to iterate over each UTF8 codepoint, invoking the callback for each decoded glyph
|
|
static inline bool qp_iterate_code_points(qff_font_handle_t *qff_font, const char *str, code_point_handler handler, void *cb_arg) {
|
|
while (*str) {
|
|
int32_t code_point = 0;
|
|
str = decode_utf8(str, &code_point);
|
|
if (code_point < 0) {
|
|
qp_dprintf("Invalid unicode code point decoded. Cannot render.\n");
|
|
return false;
|
|
}
|
|
|
|
uint8_t width;
|
|
if (!qp_drawtext_prepare_glyph_for_render(qff_font, code_point, &width)) {
|
|
qp_dprintf("Failed to prepare glyph for rendering.\n");
|
|
return false;
|
|
}
|
|
|
|
if (!handler(qff_font, code_point, width, qff_font->base.line_height, cb_arg)) {
|
|
qp_dprintf("Failed to execute glyph handler.\n");
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// String width calculation
|
|
|
|
// Callback state
|
|
typedef struct code_point_iter_calcwidth_state_t {
|
|
int16_t width;
|
|
} code_point_iter_calcwidth_state_t;
|
|
|
|
// Codepoint handler callback: width calc
|
|
static inline bool qp_font_code_point_handler_calcwidth(qff_font_handle_t *qff_font, uint32_t code_point, uint8_t width, uint8_t height, void *cb_arg) {
|
|
code_point_iter_calcwidth_state_t *state = (code_point_iter_calcwidth_state_t *)cb_arg;
|
|
|
|
// Increment the overall width by this glyph's width
|
|
state->width += width;
|
|
|
|
return true;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// String drawing implementation
|
|
|
|
// Callback state
|
|
typedef struct code_point_iter_drawglyph_state_t {
|
|
painter_device_t device;
|
|
int16_t xpos;
|
|
int16_t ypos;
|
|
qp_internal_byte_input_callback input_callback;
|
|
qp_internal_byte_input_state_t * input_state;
|
|
qp_internal_pixel_output_state_t *output_state;
|
|
} code_point_iter_drawglyph_state_t;
|
|
|
|
// Codepoint handler callback: drawing
|
|
static inline bool qp_font_code_point_handler_drawglyph(qff_font_handle_t *qff_font, uint32_t code_point, uint8_t width, uint8_t height, void *cb_arg) {
|
|
code_point_iter_drawglyph_state_t *state = (code_point_iter_drawglyph_state_t *)cb_arg;
|
|
painter_driver_t * driver = (painter_driver_t *)state->device;
|
|
|
|
// Reset the input state's RLE mode -- the stream should already be correctly positioned by qp_iterate_code_points()
|
|
state->input_state->rle.mode = MARKER_BYTE; // ignored if not using RLE
|
|
|
|
// Reset the output state
|
|
state->output_state->pixel_write_pos = 0;
|
|
|
|
// Configure where we're going to be rendering to
|
|
driver->driver_vtable->viewport(state->device, state->xpos, state->ypos, state->xpos + width - 1, state->ypos + height - 1);
|
|
|
|
// Move the x-position for the next glyph
|
|
state->xpos += width;
|
|
|
|
// Decode the pixel data for the glyph
|
|
uint32_t pixel_count = ((uint32_t)width) * height;
|
|
bool ret = qp_internal_decode_palette(state->device, pixel_count, qff_font->bpp, state->input_callback, state->input_state, qp_internal_global_pixel_lookup_table, qp_internal_pixel_appender, state->output_state);
|
|
|
|
// Any leftovers need transmission as well.
|
|
if (ret && state->output_state->pixel_write_pos > 0) {
|
|
ret &= driver->driver_vtable->pixdata(state->device, qp_internal_global_pixdata_buffer, state->output_state->pixel_write_pos);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Quantum Painter External API: qp_textwidth
|
|
|
|
int16_t qp_textwidth(painter_font_handle_t font, const char *str) {
|
|
qff_font_handle_t *qff_font = (qff_font_handle_t *)font;
|
|
if (!qff_font->validate_ok) {
|
|
qp_dprintf("qp_textwidth: fail (invalid font)\n");
|
|
return false;
|
|
}
|
|
|
|
// Create the codepoint iterator state
|
|
code_point_iter_calcwidth_state_t state = {.width = 0};
|
|
// Iterate each codepoint, return the calculated width if successful.
|
|
return qp_iterate_code_points(qff_font, str, qp_font_code_point_handler_calcwidth, &state) ? state.width : 0;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Quantum Painter External API: qp_drawtext
|
|
|
|
int16_t qp_drawtext(painter_device_t device, uint16_t x, uint16_t y, painter_font_handle_t font, const char *str) {
|
|
// Offload to the recolor variant, substituting fg=white bg=black.
|
|
// Traditional LCDs with those colors will need to manually invoke qp_drawtext_recolor with the colors reversed.
|
|
return qp_drawtext_recolor(device, x, y, font, str, 0, 0, 255, 0, 0, 0);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
// Quantum Painter External API: qp_drawtext_recolor
|
|
|
|
int16_t qp_drawtext_recolor(painter_device_t device, uint16_t x, uint16_t y, painter_font_handle_t font, const char *str, uint8_t hue_fg, uint8_t sat_fg, uint8_t val_fg, uint8_t hue_bg, uint8_t sat_bg, uint8_t val_bg) {
|
|
qp_dprintf("qp_drawtext_recolor: entry\n");
|
|
painter_driver_t *driver = (painter_driver_t *)device;
|
|
if (!driver->validate_ok) {
|
|
qp_dprintf("qp_drawtext_recolor: fail (validation_ok == false)\n");
|
|
return 0;
|
|
}
|
|
|
|
qff_font_handle_t *qff_font = (qff_font_handle_t *)font;
|
|
if (!qff_font->validate_ok) {
|
|
qp_dprintf("qp_drawtext_recolor: fail (invalid font)\n");
|
|
return false;
|
|
}
|
|
|
|
if (!qp_comms_start(device)) {
|
|
qp_dprintf("qp_drawtext_recolor: fail (could not start comms)\n");
|
|
return 0;
|
|
}
|
|
|
|
// Set up the byte input state and input callback
|
|
qp_internal_byte_input_state_t input_state = {.device = device, .src_stream = &qff_font->stream};
|
|
qp_internal_byte_input_callback input_callback = qp_internal_prepare_input_state(&input_state, qff_font->compression_scheme);
|
|
if (input_callback == NULL) {
|
|
qp_dprintf("qp_drawtext_recolor: fail (invalid font compression scheme)\n");
|
|
qp_comms_stop(device);
|
|
return false;
|
|
}
|
|
|
|
// Set up the pixel output state
|
|
qp_internal_pixel_output_state_t output_state = {.device = device, .pixel_write_pos = 0, .max_pixels = qp_internal_num_pixels_in_buffer(device)};
|
|
|
|
// Set up the codepoint iteration state
|
|
code_point_iter_drawglyph_state_t state = {// Common
|
|
.device = device,
|
|
.xpos = x,
|
|
.ypos = y,
|
|
// Input
|
|
.input_callback = input_callback,
|
|
.input_state = &input_state,
|
|
// Output
|
|
.output_state = &output_state};
|
|
|
|
qp_pixel_t fg_hsv888 = {.hsv888 = {.h = hue_fg, .s = sat_fg, .v = val_fg}};
|
|
qp_pixel_t bg_hsv888 = {.hsv888 = {.h = hue_bg, .s = sat_bg, .v = val_bg}};
|
|
uint32_t data_offset;
|
|
if (!qp_drawtext_prepare_font_for_render(driver, qff_font, fg_hsv888, bg_hsv888, &data_offset)) {
|
|
qp_dprintf("qp_drawtext_recolor: fail (failed to prepare font for rendering)\n");
|
|
qp_comms_stop(device);
|
|
return false;
|
|
}
|
|
|
|
// Iterate the codepoints with the drawglyph callback
|
|
bool ret = qp_iterate_code_points(qff_font, str, qp_font_code_point_handler_drawglyph, &state);
|
|
|
|
qp_dprintf("qp_drawtext_recolor: %s\n", ret ? "ok" : "fail");
|
|
qp_comms_stop(device);
|
|
return ret ? (state.xpos - x) : 0;
|
|
}
|