From 476fbb5ad19def8dab9ef7bf85d209172d9ba517 Mon Sep 17 00:00:00 2001
From: "K. Lange" <klange@toaruos.org>
Date: Thu, 1 Mar 2018 15:10:57 +0900
Subject: [PATCH] Draw more text

---
 Makefile             |  11 ++-
 background.c         |  72 ++++++++++----
 decors/decor-fancy.c |   8 +-
 lib/drawstring.c     | 223 +++++++++++++++++++++++++++++++++++++++++++
 lib/drawstring.h     |   5 +
 5 files changed, 293 insertions(+), 26 deletions(-)
 create mode 100644 lib/drawstring.c
 create mode 100644 lib/drawstring.h

diff --git a/Makefile b/Makefile
index b6f6d915..a88a97bf 100644
--- a/Makefile
+++ b/Makefile
@@ -68,11 +68,14 @@ base/lib/libtoaru_rline.so: lib/rline.c lib/rline.h base/lib/libtoaru_kbd.so
 base/lib/libtoaru_termemu.so: lib/termemu.c lib/termemu.h base/lib/libtoaru_graphics.so
 	$(CC) -o $@ $(CFLAGS) -shared -fPIC $< -ltoaru_graphics
 
+base/lib/libtoaru_drawstring.so: lib/drawstring.c lib/drawstring.h base/lib/libtoaru_graphics.so
+	$(CC) -o $@ $(CFLAGS) -shared -fPIC $< -ltoaru_graphics
+
 base/lib/libtoaru_decorations.so: lib/decorations.c lib/decorations.h base/lib/libtoaru_graphics.so
 	$(CC) -o $@ $(CFLAGS) -shared -fPIC $< -ltoaru_graphics
 
-base/lib/libtoaru-decor-fancy.so: decors/decor-fancy.c lib/decorations.h base/lib/libtoaru_graphics.so base/lib/libtoaru_decorations.so
-	$(CC) -o $@ $(CFLAGS) -shared -fPIC $< -ltoaru_decorations -ltoaru_graphics
+base/lib/libtoaru-decor-fancy.so: decors/decor-fancy.c lib/decorations.h base/lib/libtoaru_graphics.so base/lib/libtoaru_decorations.so base/lib/libtoaru_drawstring.so
+	$(CC) -o $@ $(CFLAGS) -shared -fPIC $< -ltoaru_decorations -ltoaru_drawstring -ltoaru_graphics
 
 base/bin/init: init.c base/lib/libnihc.a | dirs
 	$(CC) -static -Wl,-static $(CFLAGS) -o $@ $< $(LIBS)
@@ -86,8 +89,8 @@ base/bin/sysinfo: sysinfo.c base/lib/libnihc.so base/lib/libtoaru_graphics.so ba
 base/bin/terminal: terminal.c base/lib/libnihc.so base/lib/libtoaru_graphics.so base/lib/libtoaru_yutani.so base/lib/libtoaru_decorations.so base/lib/libtoaru_dlfcn.so base/lib/libtoaru_list.so base/lib/libtoaru_kbd.so base/lib/libtoaru_termemu.so base/lib/libtoaru_pex.so base/lib/libtoaru_hashmap.so
 	$(CC) $(CFLAGS) -o $@ $< -ltoaru_termemu -ltoaru_decorations -ltoaru_yutani -ltoaru_graphics -ltoaru_pex -ltoaru_hashmap -ltoaru_dlfcn -ltoaru_kbd -ltoaru_list $(LIBS)
 
-base/bin/background: background.c base/lib/libnihc.so base/lib/libtoaru_graphics.so base/lib/libtoaru_yutani.so base/lib/libtoaru_pthread.so
-	$(CC) $(CFLAGS) -o $@ $< -ltoaru_yutani -ltoaru_graphics -ltoaru_pex -ltoaru_pthread -ltoaru_hashmap -ltoaru_list $(LIBS)
+base/bin/background: background.c base/lib/libnihc.so base/lib/libtoaru_graphics.so base/lib/libtoaru_yutani.so base/lib/libtoaru_pthread.so base/lib/libtoaru_drawstring.so
+	$(CC) $(CFLAGS) -o $@ $< -ltoaru_drawstring -ltoaru_yutani -ltoaru_graphics -ltoaru_pex -ltoaru_pthread -ltoaru_hashmap -ltoaru_list $(LIBS)
 
 base/bin/drawlines: drawlines.c base/lib/libnihc.so base/lib/libtoaru_graphics.so base/lib/libtoaru_yutani.so base/lib/libtoaru_pthread.so
 	$(CC) $(CFLAGS) -o $@ $< -ltoaru_yutani -ltoaru_graphics -ltoaru_pex -ltoaru_pthread -ltoaru_hashmap -ltoaru_list $(LIBS)
diff --git a/background.c b/background.c
index 6b8cdba7..f5935626 100644
--- a/background.c
+++ b/background.c
@@ -1,32 +1,67 @@
 #include <stdio.h>
+#include <sys/utsname.h>
 
 #include "lib/yutani.h"
 #include "lib/graphics.h"
+#include "lib/drawstring.h"
+
+#define PANEL_HEIGHT 24
 
 static yutani_t * yctx;
-static yutani_window_t * wina;
-static gfx_context_t * ctx;
+static yutani_window_t * wallpaper_window;
+static gfx_context_t * wallpaper_ctx;
+static yutani_window_t * panel_window;
+static gfx_context_t * panel_ctx;
 
 static void draw_background(int width, int height) {
-	draw_fill(ctx, rgb(110,110,110));
+	draw_fill(wallpaper_ctx, rgb(110,110,110));
 }
 
-static void resize_finish(int width, int height) {
-	yutani_window_resize_accept(yctx, wina, width, height);
-	reinit_graphics_yutani(ctx, wina);
+static void draw_panel(int width) {
+	char label[100];
+	struct utsname u;
+	uname(&u);
+	sprintf(label, "ToaruOS-NIH %s", u.release);
+	draw_fill(panel_ctx, rgb(20,20,20));
+	draw_string(panel_ctx, 1, 2, rgb(255,255,255), label);
+}
+
+static void resize_finish_wallpaper(int width, int height) {
+	yutani_window_resize_accept(yctx, wallpaper_window, width, height);
+	reinit_graphics_yutani(wallpaper_ctx, wallpaper_window);
 	draw_background(width, height);
-	yutani_window_resize_done(yctx, wina);
-	yutani_flip(yctx, wina);
+	yutani_window_resize_done(yctx, wallpaper_window);
+	yutani_flip(yctx, wallpaper_window);
+}
+
+static void resize_finish_panel(int width, int height) {
+	yutani_window_resize_accept(yctx, panel_window, width, height);
+	reinit_graphics_yutani(panel_ctx, panel_window);
+	draw_panel(width);
+	yutani_window_resize_done(yctx, panel_window);
+	yutani_flip(yctx, panel_window);
 }
 
 int main (int argc, char ** argv) {
 	yctx = yutani_init();
-	wina = yutani_window_create(yctx, yctx->display_width, yctx->display_height);
-	yutani_window_move(yctx, wina, 0, 0);
-	yutani_set_stack(yctx, wina, YUTANI_ZORDER_BOTTOM);
-	ctx = init_graphics_yutani(wina);
+
+	/* wallpaper */
+	wallpaper_window = yutani_window_create(yctx, yctx->display_width, yctx->display_height);
+	yutani_window_move(yctx, wallpaper_window, 0, 0);
+	yutani_set_stack(yctx, wallpaper_window, YUTANI_ZORDER_BOTTOM);
+
+	wallpaper_ctx = init_graphics_yutani(wallpaper_window);
 	draw_background(yctx->display_width, yctx->display_height);
-	yutani_flip(yctx, wina);
+	yutani_flip(yctx, wallpaper_window);
+
+	/* panel */
+	panel_window = yutani_window_create(yctx, yctx->display_width, PANEL_HEIGHT);
+	yutani_window_move(yctx, panel_window, 0, 0);
+	yutani_set_stack(yctx, panel_window, YUTANI_ZORDER_TOP);
+
+	panel_ctx = init_graphics_yutani(panel_window);
+	draw_panel(yctx->display_width);
+	yutani_flip(yctx, panel_window);
 
 	int should_exit = 0;
 
@@ -36,12 +71,17 @@ int main (int argc, char ** argv) {
 			switch (m->type) {
 				case YUTANI_MSG_WELCOME:
 					fprintf(stderr, "Request to resize desktop received, resizing to %d x %d\n", yctx->display_width, yctx->display_height);
-					yutani_window_resize_offer(yctx, wina, yctx->display_width, yctx->display_height);
+					yutani_window_resize_offer(yctx, wallpaper_window, yctx->display_width, yctx->display_height);
+					yutani_window_resize_offer(yctx, panel_window, yctx->display_width, PANEL_HEIGHT);
 					break;
 				case YUTANI_MSG_RESIZE_OFFER:
 					{
 						struct yutani_msg_window_resize * wr = (void*)m->data;
-						resize_finish(wr->width, wr->height);
+						if (wr->wid == wallpaper_window->wid) {
+							resize_finish_wallpaper(wr->width, wr->height);
+						} else if (wr->wid == panel_window->wid) {
+							resize_finish_panel(wr->width, wr->height);
+						}
 					}
 					break;
 				case YUTANI_MSG_SESSION_END:
@@ -54,7 +94,7 @@ int main (int argc, char ** argv) {
 		free(m);
 	}
 
-	yutani_close(yctx, wina);
+	yutani_close(yctx, wallpaper_window);
 
 	return 0;
 }
diff --git a/decors/decor-fancy.c b/decors/decor-fancy.c
index ff4b1a0f..5c47f5f9 100644
--- a/decors/decor-fancy.c
+++ b/decors/decor-fancy.c
@@ -4,6 +4,7 @@
 #include "lib/graphics.h"
 //#include "lib/shmemfonts.h"
 #include "lib/decorations.h"
+#include "lib/drawstring.h"
 
 #define INACTIVE 9
 
@@ -24,7 +25,7 @@ static int lry_offset = 3;
 
 static sprite_t * sprites[20];
 
-#define TEXT_OFFSET 24
+#define TEXT_OFFSET 10
 
 static void init_sprite(int id, char * path) {
 	sprites[id] = malloc(sizeof(sprite_t));
@@ -74,10 +75,6 @@ static void render_decorations_fancy(yutani_window_t * window, gfx_context_t * c
 	}
 	draw_sprite(ctx, sprites[decors_active + 7], width - lr_width, height - l_height);
 
-#if 0
-	set_font_face(FONT_SANS_SERIF_BOLD);
-	set_font_size(12);
-
 	char * tmp_title = strdup(title);
 	int t_l = strlen(tmp_title);
 
@@ -100,7 +97,6 @@ static void render_decorations_fancy(yutani_window_t * window, gfx_context_t * c
 	}
 
 	free(tmp_title);
-#endif
 
 	/* Buttons */
 	draw_sprite(ctx, sprites[decors_active + 8], width - 28, 16);
diff --git a/lib/drawstring.c b/lib/drawstring.c
new file mode 100644
index 00000000..77a98979
--- /dev/null
+++ b/lib/drawstring.c
@@ -0,0 +1,223 @@
+#include "lib/utf8decode.h"
+#include "lib/graphics.h"
+
+#include "terminal-font.h"
+
+static uint16_t char_width     = 9;    /* Width of a cell in pixels */
+static uint16_t char_height    = 20;   /* Height of a cell in pixels */
+
+static uint32_t ununicode(uint32_t c) {
+	switch (c) {
+		case L'☺': return 1;
+		case L'☻': return 2;
+		case L'♥': return 3;
+		case L'♦': return 4;
+		case L'♣': return 5;
+		case L'♠': return 6;
+		case L'•': return 7;
+		case L'◘': return 8;
+		case L'○': return 9;
+		case L'◙': return 10;
+		case L'♂': return 11;
+		case L'♀': return 12;
+		case L'♪': return 13;
+		case L'♫': return 14;
+		case L'☼': return 15;
+		case L'►': return 16;
+		case L'◄': return 17;
+		case L'↕': return 18;
+		case L'‼': return 19;
+		case L'¶': return 20;
+		case L'§': return 21;
+		case L'▬': return 22;
+		case L'↨': return 23;
+		case L'↑': return 24;
+		case L'↓': return 25;
+		case L'→': return 26;
+		case L'←': return 27;
+		case L'∟': return 28;
+		case L'↔': return 29;
+		case L'▲': return 30;
+		case L'▼': return 31;
+				   /* ASCII text */
+		case L'⌂': return 127;
+		case L'Ç': return 128;
+		case L'ü': return 129;
+		case L'é': return 130;
+		case L'â': return 131;
+		case L'ä': return 132;
+		case L'à': return 133;
+		case L'å': return 134;
+		case L'ç': return 135;
+		case L'ê': return 136;
+		case L'ë': return 137;
+		case L'è': return 138;
+		case L'ï': return 139;
+		case L'î': return 140;
+		case L'ì': return 141;
+		case L'Ä': return 142;
+		case L'Å': return 143;
+		case L'É': return 144;
+		case L'æ': return 145;
+		case L'Æ': return 146;
+		case L'ô': return 147;
+		case L'ö': return 148;
+		case L'ò': return 149;
+		case L'û': return 150;
+		case L'ù': return 151;
+		case L'ÿ': return 152;
+		case L'Ö': return 153;
+		case L'Ü': return 154;
+		case L'¢': return 155;
+		case L'£': return 156;
+		case L'¥': return 157;
+		case L'₧': return 158;
+		case L'ƒ': return 159;
+		case L'á': return 160;
+		case L'í': return 161;
+		case L'ó': return 162;
+		case L'ú': return 163;
+		case L'ñ': return 164;
+		case L'Ñ': return 165;
+		case L'ª': return 166;
+		case L'º': return 167;
+		case L'¿': return 168;
+		case L'⌐': return 169;
+		case L'¬': return 170;
+		case L'½': return 171;
+		case L'¼': return 172;
+		case L'¡': return 173;
+		case L'«': return 174;
+		case L'»': return 175;
+		case L'░': return 176;
+		case L'▒': return 177;
+		case L'▓': return 178;
+		case L'│': return 179;
+		case L'┤': return 180;
+		case L'╡': return 181;
+		case L'╢': return 182;
+		case L'╖': return 183;
+		case L'╕': return 184;
+		case L'╣': return 185;
+		case L'║': return 186;
+		case L'╗': return 187;
+		case L'╝': return 188;
+		case L'╜': return 189;
+		case L'╛': return 190;
+		case L'┐': return 191;
+		case L'└': return 192;
+		case L'┴': return 193;
+		case L'┬': return 194;
+		case L'├': return 195;
+		case L'─': return 196;
+		case L'┼': return 197;
+		case L'╞': return 198;
+		case L'╟': return 199;
+		case L'╚': return 200;
+		case L'╔': return 201;
+		case L'╩': return 202;
+		case L'╦': return 203;
+		case L'╠': return 204;
+		case L'═': return 205;
+		case L'╬': return 206;
+		case L'╧': return 207;
+		case L'╨': return 208;
+		case L'╤': return 209;
+		case L'╥': return 210;
+		case L'╙': return 211;
+		case L'╘': return 212;
+		case L'╒': return 213;
+		case L'╓': return 214;
+		case L'╫': return 215;
+		case L'╪': return 216;
+		case L'┘': return 217;
+		case L'┌': return 218;
+		case L'█': return 219;
+		case L'▄': return 220;
+		case L'▌': return 221;
+		case L'▐': return 222;
+		case L'▀': return 223;
+		case L'α': return 224;
+		case L'ß': return 225;
+		case L'Γ': return 226;
+		case L'π': return 227;
+		case L'Σ': return 228;
+		case L'σ': return 229;
+		case L'µ': return 230;
+		case L'τ': return 231;
+		case L'Φ': return 232;
+		case L'Θ': return 233;
+		case L'Ω': return 234;
+		case L'δ': return 235;
+		case L'∞': return 236;
+		case L'φ': return 237;
+		case L'ε': return 238;
+		case L'∩': return 239;
+		case L'≡': return 240;
+		case L'±': return 241;
+		case L'≥': return 242;
+		case L'≤': return 243;
+		case L'⌠': return 244;
+		case L'⌡': return 245;
+		case L'÷': return 246;
+		case L'≈': return 247;
+		case L'°': return 248;
+		case L'∙': return 249;
+		case L'·': return 250;
+		case L'√': return 251;
+		case L'ⁿ': return 252;
+		case L'²': return 253;
+		case L'■': return 254;
+	}
+	return 4;
+}
+
+void draw_string(gfx_context_t * ctx, int x, int y, uint32_t _fg, char * str) {
+	static uint32_t codepoint = 0;
+	static uint32_t unicode_state = 0;
+
+	while (*str) {
+		if (!decode(&unicode_state, &codepoint, (uint8_t)*str)) {
+			int val = codepoint;
+			if (val > 128) val = ununicode(val);
+			uint16_t * c = large_font[val];
+			for (uint8_t i = 0; i < char_height; ++i) {
+				for (uint8_t j = 0; j < char_width; ++j) {
+					if (c[i] & (1 << (15-j))) {
+						GFX(ctx, x+j, y+i) = _fg;
+					}
+				}
+			}
+			x += char_width;
+			unicode_state = 0;
+			codepoint = 0;
+		} else if (unicode_state == UTF8_REJECT) {
+			break;
+			unicode_state = 0;
+			codepoint = 0;
+		}
+		str++;
+	}
+}
+
+int draw_string_width(char * str) {
+	uint32_t codepoint = 0;
+	uint32_t unicode_state = 0;
+
+	int x = 0;
+
+	while (*str) {
+		if (!decode(&unicode_state, &codepoint, (uint8_t)*str)) {
+			x += char_width;
+			unicode_state = 0;
+			codepoint = 0;
+		} else if (unicode_state == UTF8_REJECT) {
+			break;
+			unicode_state = 0;
+			codepoint = 0;
+		}
+		str++;
+	}
+	return x;
+}
+
diff --git a/lib/drawstring.h b/lib/drawstring.h
new file mode 100644
index 00000000..83f3edca
--- /dev/null
+++ b/lib/drawstring.h
@@ -0,0 +1,5 @@
+#pragma once
+#include "lib/graphics.h"
+
+void draw_string(gfx_context_t * ctx, int x, int y, uint32_t _fg, char * str);
+int draw_string_width(char * str);