mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-20 22:53:06 +00:00
239 lines
No EOL
6.6 KiB
C++
239 lines
No EOL
6.6 KiB
C++
/*
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* Copyright (c) 2018 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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 <switch.h>
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#include "fatal_types.hpp"
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#include <cstring>
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#include <cstdlib>
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#include <cstdio>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include "fatal_config.hpp"
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#include "fatal_font.hpp"
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static u16 *g_fb = nullptr;
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static u32 (*g_unswizzle_func)(u32, u32) = nullptr;
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static u16 g_font_color = 0xFFFF;
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static float g_font_sz = 16.0f;
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static u32 g_line_x = 0, g_cur_x = 0, g_cur_y = 0;
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static u32 g_mono_adv = 0;
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static PlFontData g_font;
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static PlFontData g_fonts[PlSharedFontType_Total];
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static FT_Library g_library;
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static FT_Face g_face;
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static FT_Error g_ft_err = 0;
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static u16 Blend(u16 color, u16 bg, u8 alpha) {
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const u32 c_r = RGB565_GET_R8(color);
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const u32 c_g = RGB565_GET_G8(color);
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const u32 c_b = RGB565_GET_B8(color);
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const u32 b_r = RGB565_GET_R8(bg);
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const u32 b_g = RGB565_GET_G8(bg);
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const u32 b_b = RGB565_GET_B8(bg);
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const u32 r = ((alpha * c_r) + ((0xFF - alpha) * b_r)) / 0xFF;
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const u32 g = ((alpha * c_g) + ((0xFF - alpha) * b_g)) / 0xFF;
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const u32 b = ((alpha * c_b) + ((0xFF - alpha) * b_b)) / 0xFF;
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return RGB888_TO_RGB565(r, g, b);
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}
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static void DrawGlyph(FT_Bitmap *bitmap, u32 x, u32 y) {
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u8* imageptr = bitmap->buffer;
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if (bitmap->pixel_mode!=FT_PIXEL_MODE_GRAY) return;
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for (u32 tmpy = 0; tmpy < bitmap->rows; tmpy++) {
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for (u32 tmpx = 0; tmpx < bitmap->width; tmpx++) {
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/* Implement very simple blending, as the bitmap value is an alpha value. */
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u16 *ptr = &g_fb[g_unswizzle_func(x + tmpx, y + tmpy)];
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*ptr = Blend(g_font_color, *ptr, imageptr[tmpx]);
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}
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imageptr += bitmap->pitch;
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}
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}
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static void DrawString(const char *str, bool add_line, bool mono = false) {
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FT_UInt glyph_index;
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FT_GlyphSlot slot = g_face->glyph;
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const size_t len = strlen(str);
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u32 cur_x = g_cur_x, cur_y = g_cur_y;
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ON_SCOPE_EXIT {
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if (add_line) {
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/* Advance to next line. */
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g_cur_x = g_line_x;
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g_cur_y = cur_y + (g_face->size->metrics.height >> 6);
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} else {
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g_cur_x = cur_x;
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g_cur_y = cur_y;
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}
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};
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for (u32 i = 0; i < len; ) {
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u32 cur_char;
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ssize_t unit_count = decode_utf8(&cur_char, reinterpret_cast<const u8 *>(&str[i]));
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if (unit_count <= 0) break;
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i += unit_count;
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if (cur_char == '\n') {
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cur_x = g_line_x;
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cur_y += g_face->size->metrics.height >> 6;
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continue;
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}
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glyph_index = FT_Get_Char_Index(g_face, cur_char);
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g_ft_err = FT_Load_Glyph(g_face, glyph_index, FT_LOAD_DEFAULT);
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if (g_ft_err == 0) {
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g_ft_err = FT_Render_Glyph(g_face->glyph, FT_RENDER_MODE_NORMAL);
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}
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if (g_ft_err) {
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return;
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}
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DrawGlyph(&slot->bitmap, cur_x + slot->bitmap_left + ((mono && g_mono_adv > slot->advance.x) ? ((g_mono_adv - slot->advance.x) >> 7) : 0), cur_y - slot->bitmap_top);
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cur_x += (mono ? g_mono_adv : slot->advance.x) >> 6;
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cur_y += slot->advance.y >> 6;
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}
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}
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void FontManager::PrintLine(const char *str) {
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return DrawString(str, true);
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}
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void FontManager::PrintFormatLine(const char *format, ...) {
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char char_buf[0x400];
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va_list va_arg;
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va_start(va_arg, format);
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vsnprintf(char_buf, sizeof(char_buf), format, va_arg);
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va_end(va_arg);
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PrintLine(char_buf);
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}
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void FontManager::Print(const char *str) {
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return DrawString(str, false);
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}
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void FontManager::PrintFormat(const char *format, ...) {
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char char_buf[0x400];
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va_list va_arg;
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va_start(va_arg, format);
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vsnprintf(char_buf, sizeof(char_buf), format, va_arg);
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va_end(va_arg);
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Print(char_buf);
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}
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void FontManager::PrintMonospaceU64(u64 x) {
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char char_buf[0x400];
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snprintf(char_buf, sizeof(char_buf), "%016lX", x);
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DrawString(char_buf, false, true);
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}
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void FontManager::PrintMonospaceU32(u32 x) {
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char char_buf[0x400];
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snprintf(char_buf, sizeof(char_buf), "%08X", x);
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DrawString(char_buf, false, true);
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}
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void FontManager::PrintMonospaceBlank(u32 width) {
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char char_buf[0x400] = {0};
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for (size_t i = 0; i < width && i < sizeof(char_buf); i++) {
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char_buf[i] = ' ';
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}
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DrawString(char_buf, false, true);
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}
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void FontManager::SetFontColor(u16 color) {
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g_font_color = color;
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}
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void FontManager::SetPosition(u32 x, u32 y) {
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g_line_x = x;
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g_cur_x = x;
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g_cur_y = y;
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}
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u32 FontManager::GetX() {
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return g_cur_x;
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}
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u32 FontManager::GetY() {
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return g_cur_y;
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}
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void FontManager::SetFontSize(float fsz) {
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g_font_sz = fsz;
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g_ft_err = FT_Set_Char_Size(g_face, 0, static_cast<u32>(g_font_sz * 64.0f), 96, 96);
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g_ft_err = FT_Load_Glyph(g_face, FT_Get_Char_Index(g_face, 'A'), FT_LOAD_DEFAULT);
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if (g_ft_err == 0) {
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g_ft_err = FT_Render_Glyph(g_face->glyph, FT_RENDER_MODE_NORMAL);
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}
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if (g_ft_err == 0) {
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g_mono_adv = g_face->glyph->advance.x;
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}
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}
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void FontManager::AddSpacingLines(float num_lines) {
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g_cur_x = g_line_x;
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g_cur_y += static_cast<u32>((static_cast<float>(g_face->size->metrics.height) * num_lines) / 64.0f);
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}
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void FontManager::ConfigureFontFramebuffer(u16 *fb, u32 (*unswizzle_func)(u32, u32)) {
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g_fb = fb;
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g_unswizzle_func = unswizzle_func;
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}
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Result FontManager::InitializeSharedFont() {
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Result rc;
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size_t total_fonts = 0;
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if (R_FAILED((rc = plGetSharedFont(GetFatalConfig()->language_code, g_fonts, PlSharedFontType_Total, &total_fonts)))) {
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return rc;
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}
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if (R_FAILED((rc = plGetSharedFontByType(&g_font, PlSharedFontType_Standard)))) {
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return rc;
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}
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g_ft_err = FT_Init_FreeType(&g_library);
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if (g_ft_err) return g_ft_err;
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g_ft_err = FT_New_Memory_Face(g_library, reinterpret_cast<const FT_Byte *>(g_font.address), g_font.size, 0, &g_face);
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if (g_ft_err) return g_ft_err;
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SetFontSize(g_font_sz);
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return g_ft_err;
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} |