1/* Copyright (c) 2013-2015 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#include <mgba-util/gui/font.h>
  7#include <mgba-util/gui/font-metrics.h>
  8#include "icons.h"
  9#include "font.h"
 10
 11#include <malloc.h>
 12#include <ogc/tpl.h>
 13
 14#define GLYPH_HEIGHT 24
 15#define CELL_HEIGHT 32
 16#define CELL_WIDTH 32
 17
 18struct GUIFont {
 19	TPLFile tdf;
 20	TPLFile iconsTdf;
 21};
 22
 23struct GUIFont* GUIFontCreate(void) {
 24	struct GUIFont* guiFont = malloc(sizeof(struct GUIFont));
 25	if (!guiFont) {
 26		return 0;
 27	}
 28
 29	// libogc's TPL code modifies and frees this itself...
 30	void* fontTpl = memalign(32, font_size);
 31	if (!fontTpl) {
 32		free(guiFont);
 33		return 0;
 34	}
 35	memcpy(fontTpl, font, font_size);
 36	TPL_OpenTPLFromMemory(&guiFont->tdf, fontTpl, font_size);
 37
 38	void* iconsTpl = memalign(32, icons_size);
 39	if (!iconsTpl) {
 40		TPL_CloseTPLFile(&guiFont->tdf);
 41		free(guiFont);
 42		return 0;
 43	}
 44	memcpy(iconsTpl, icons, icons_size);
 45	TPL_OpenTPLFromMemory(&guiFont->iconsTdf, iconsTpl, icons_size);
 46	return guiFont;
 47}
 48
 49void GUIFontDestroy(struct GUIFont* font) {
 50	TPL_CloseTPLFile(&font->tdf);
 51	TPL_CloseTPLFile(&font->iconsTdf);
 52	free(font);
 53}
 54
 55unsigned GUIFontHeight(const struct GUIFont* font) {
 56	UNUSED(font);
 57	return GLYPH_HEIGHT;
 58}
 59
 60unsigned GUIFontGlyphWidth(const struct GUIFont* font, uint32_t glyph) {
 61	UNUSED(font);
 62	if (glyph > 0x7F) {
 63		glyph = '?';
 64	}
 65	return defaultFontMetrics[glyph].width * 2;
 66}
 67
 68void GUIFontIconMetrics(const struct GUIFont* font, enum GUIIcon icon, unsigned* w, unsigned* h) {
 69	UNUSED(font);
 70	if (icon >= GUI_ICON_MAX) {
 71		if (w) {
 72			*w = 0;
 73		}
 74		if (h) {
 75			*h = 0;
 76		}
 77	} else {
 78		if (w) {
 79			*w = defaultIconMetrics[icon].width * 2;
 80		}
 81		if (h) {
 82			*h = defaultIconMetrics[icon].height * 2;
 83		}
 84	}
 85}
 86
 87void GUIFontDrawGlyph(struct GUIFont* font, int x, int y, uint32_t color, uint32_t glyph) {
 88	color = (color >> 24) | (color << 8);
 89	GXTexObj tex;
 90	TPL_GetTexture(&font->tdf, 0, &tex);
 91	GX_LoadTexObj(&tex, GX_TEXMAP0);
 92
 93	GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_NOOP);
 94	GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
 95
 96	if (glyph > 0x7F) {
 97		glyph = '?';
 98	}
 99	struct GUIFontGlyphMetric metric = defaultFontMetrics[glyph];
100	s16 tx = (glyph & 15) * CELL_WIDTH + metric.padding.left * 2;
101	s16 ty = (glyph >> 4) * CELL_HEIGHT + metric.padding.top * 2;
102	GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
103	GX_Position2s16(x, y - GLYPH_HEIGHT + metric.padding.top * 2);
104	GX_Color1u32(color);
105	GX_TexCoord2f32(tx / 512.f, ty / 256.f);
106
107	GX_Position2s16(x + CELL_WIDTH - (metric.padding.left + metric.padding.right) * 2, y - GLYPH_HEIGHT + metric.padding.top * 2);
108	GX_Color1u32(color);
109	GX_TexCoord2f32((tx + CELL_WIDTH - (metric.padding.left + metric.padding.right) * 2) / 512.f, ty / 256.f);
110
111	GX_Position2s16(x + CELL_WIDTH - (metric.padding.left + metric.padding.right) * 2, y - GLYPH_HEIGHT + CELL_HEIGHT - metric.padding.bottom * 2);
112	GX_Color1u32(color);
113	GX_TexCoord2f32((tx + CELL_WIDTH - (metric.padding.left + metric.padding.right) * 2) / 512.f, (ty + CELL_HEIGHT - (metric.padding.top + metric.padding.bottom) * 2) / 256.f);
114
115	GX_Position2s16(x, y - GLYPH_HEIGHT + CELL_HEIGHT - metric.padding.bottom * 2);
116	GX_Color1u32(color);
117	GX_TexCoord2f32(tx / 512.f, (ty + CELL_HEIGHT - (metric.padding.top + metric.padding.bottom) * 2) / 256.f);
118	GX_End();
119}
120
121void GUIFontDrawIcon(struct GUIFont* font, int x, int y, enum GUIAlignment align, enum GUIOrientation orient, uint32_t color, enum GUIIcon icon) {
122	if (icon >= GUI_ICON_MAX) {
123		return;
124	}
125
126	color = (color >> 24) | (color << 8);
127	GXTexObj tex;
128
129	TPL_GetTexture(&font->iconsTdf, 0, &tex);
130	GX_LoadTexObj(&tex, GX_TEXMAP0);
131
132	GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_NOOP);
133	GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
134
135	struct GUIIconMetric metric = defaultIconMetrics[icon];
136	switch (align & GUI_ALIGN_HCENTER) {
137	case GUI_ALIGN_HCENTER:
138		x -= metric.width;
139		break;
140	case GUI_ALIGN_RIGHT:
141		x -= metric.width * 2;
142		break;
143	}
144	switch (align & GUI_ALIGN_VCENTER) {
145	case GUI_ALIGN_VCENTER:
146		y -= metric.height;
147		break;
148	case GUI_ALIGN_BOTTOM:
149		y -= metric.height * 2;
150		break;
151	}
152
153	float u[4];
154	float v[4];
155
156	switch (orient) {
157	case GUI_ORIENT_0:
158	default:
159		// TODO: Rotations
160		u[0] = u[3] = metric.x / 256.f;
161		u[1] = u[2] = (metric.x + metric.width) / 256.f;
162		v[0] = v[1] = (metric.y + metric.height) / 64.f;
163		v[2] = v[3] = metric.y / 64.f;
164		break;
165	case GUI_ORIENT_HMIRROR:
166		u[0] = u[3] = (metric.x + metric.width) / 256.f;
167		u[1] = u[2] = metric.x / 256.f;
168		v[0] = v[1] = (metric.y + metric.height) / 64.f;
169		v[2] = v[3] = metric.y / 64.f;
170		break;
171	case GUI_ORIENT_VMIRROR:
172		u[0] = u[3] = metric.x / 256.f;
173		u[1] = u[2] = (metric.x + metric.width) / 256.f;
174		v[0] = v[1] = metric.y / 64.f;
175		v[2] = v[3] = (metric.y + metric.height) / 64.f;
176		break;
177	}
178
179	GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
180	GX_Position2s16(x, y + metric.height * 2);
181	GX_Color1u32(color);
182	GX_TexCoord2f32(u[0], v[0]);
183
184	GX_Position2s16(x + metric.width * 2, y + metric.height * 2);
185	GX_Color1u32(color);
186	GX_TexCoord2f32(u[1], v[1]);
187
188	GX_Position2s16(x + metric.width * 2, y);
189	GX_Color1u32(color);
190	GX_TexCoord2f32(u[2], v[2]);
191
192	GX_Position2s16(x, y);
193	GX_Color1u32(color);
194	GX_TexCoord2f32(u[3], v[3]);
195	GX_End();
196}
197
198void GUIFontDrawIconSize(struct GUIFont* font, int x, int y, int w, int h, uint32_t color, enum GUIIcon icon) {
199	if (icon >= GUI_ICON_MAX) {
200		return;
201	}
202
203	color = (color >> 24) | (color << 8);
204	GXTexObj tex;
205
206	TPL_GetTexture(&font->iconsTdf, 0, &tex);
207	GX_LoadTexObj(&tex, GX_TEXMAP0);
208
209	GX_SetBlendMode(GX_BM_BLEND, GX_BL_SRCALPHA, GX_BL_INVSRCALPHA, GX_LO_NOOP);
210	GX_SetVtxAttrFmt(GX_VTXFMT0, GX_VA_TEX0, GX_TEX_ST, GX_F32, 0);
211
212	struct GUIIconMetric metric = defaultIconMetrics[icon];
213
214	float u[4];
215	float v[4];
216
217	if (!h) {
218		h = metric.height * 2;
219	}
220	if (!w) {
221		w = metric.width * 2;
222	}
223
224	u[0] = u[3] = metric.x / 256.f;
225	u[1] = u[2] = (metric.x + metric.width) / 256.f;
226	v[0] = v[1] = (metric.y + metric.height) / 64.f;
227	v[2] = v[3] = metric.y / 64.f;
228
229	GX_Begin(GX_QUADS, GX_VTXFMT0, 4);
230	GX_Position2s16(x, y + h);
231	GX_Color1u32(color);
232	GX_TexCoord2f32(u[0], v[0]);
233
234	GX_Position2s16(x + w, y + h);
235	GX_Color1u32(color);
236	GX_TexCoord2f32(u[1], v[1]);
237
238	GX_Position2s16(x + w, y);
239	GX_Color1u32(color);
240	GX_TexCoord2f32(u[2], v[2]);
241
242	GX_Position2s16(x, y);
243	GX_Color1u32(color);
244	GX_TexCoord2f32(u[3], v[3]);
245	GX_End();
246}