Unicode rendering on fx9860g and mono screenshot

assets-fx/fonts/uf5x7/README.md

@@ -0,0 +1,3 @@
+These are some of the Unicode blocks supported by uf5x7. Please see the
+repository at https://gitea.planet-casio.com/Lephenixnoir/uf5x7 for the full
+set.

include/gintctl/gint.h

@@ -32,6 +32,9 @@ void gintctl_gint_timer_callbacks(void);
 /* gintctl_gint_bopti(): Test image rendering */
 void gintctl_gint_bopti(void);
 
+/* gintctl_gint_topti(): Test text rendering */
+void gintctl_gint_topti(void);
+
 #ifdef FXCG50
 
 /* gintctl_gint_dma(): Test the Direct Access Memory Controller */

include/gintctl/util.h

@@ -6,6 +6,7 @@
 #define GINTCTL_UTIL
 
 #include <stdarg.h>
+#include <stdint.h>
 
 //---
 //	Platform disambiguation functions
@@ -68,4 +69,12 @@ void fkey_menu(int position, char const *text);
 
 #endif /* FXCG50 */
 
+//---
+//	Screenshot saving
+//---
+
+/* screen_mono(): Take a screenshot of the mono VRAM
+   @path  File path (will be overwritten) */
+void screen_mono(uint16_t const *filepath);
+
 #endif /* GINTCTL_UTIL */

project.cfg

@@ -83,6 +83,7 @@ LDFLAGS_CG += -Wl,-Map=build-cg/map
 FONT.hexa.png = charset:print grid.size:3x5 grid.padding:1
 FONT.font8x9_bold.png = charset:print grid.size:8x11 grid.padding:1 \
                         grid.border:0 proportional:true
+FONT.uf5x7 = charset:unicode grid.size:5x7 grid.padding:1
 
 IMG.swift.png = profile:p4
 IMG.swords.png = profile:p8

src/gint/topti.c

@@ -0,0 +1,46 @@
+#include <gint/display.h>
+#include <gint/keyboard.h>
+
+#include <gintctl/gint.h>
+#include <gintctl/util.h>
+
+/* gintctl_gint_topti(): Test text rendering */
+void gintctl_gint_topti(void)
+{
+	int key = 0;
+
+	/* Text position parameters */
+	int x = _(1,6), y=_(0,22);
+	int dy = _(8,15);
+
+	char const *strings[] = {
+		"Text rendering",
+		"Eurêka! UTF-8!",
+		#ifdef FX9860G
+		"∀Δ, ∀f : P(Δ)→Δ,",
+		"∃(A,B)⊆Δ, f(A)=f(B)",
+		#else
+		"∀Δ, ∀f : P(Δ)→Δ, ∃(A,B)⊆Δ, f(A)=f(B)",
+		#endif
+		"2 = Λα.λf.λn.f (f n)",
+		NULL,
+	};
+
+	int total = 0;
+	while(strings[total]) total++;
+
+	while(key != KEY_EXIT)
+	{
+		dclear(C_WHITE);
+		for(int i = 0; strings[i]; i++)
+			dtext(x, y + i * dy, C_BLACK, strings[i]);
+		dupdate();
+
+		key = getkey().key;
+		if(key == KEY_LEFT  && x >= -DWIDTH)  x--;
+		if(key == KEY_RIGHT && x <=  DWIDTH)  x++;
+		if(key == KEY_UP    && y >= -DHEIGHT) y--;
+		if(key == KEY_DOWN  && y <=  DHEIGHT) y++;
+		if(key == KEY_F6) screen_mono(u"\\\\fls0\\topti.bin");
+	}
+}

src/gintctl.c

@@ -48,7 +48,7 @@ struct menu menu_gint = {
 	#endif
 	{ "Real-time clock",  NULL },
 	{ "Image rendering",  gintctl_gint_bopti },
-	{ "Text rendering",   NULL },
+	{ "Text rendering",   gintctl_gint_topti },
 	#ifdef FX9860G
 	{ "Gray engine",      gintctl_gint_gray },
 	{ "Gray rendering",   gintctl_gint_grayrender },
@@ -126,6 +126,12 @@ int main(GUNUSED int isappli, GUNUSED int optnum)
 	/* Start the profiling library */
 	prof_init(PROFCTX_COUNT);
 
+	#ifdef FX9860G
+	/* Use the Unicode font uf5x7 on fx-9860G */
+	extern font_t font_uf5x7;
+	dfont(&font_uf5x7);
+	#endif
+
 	int key = 0;
 	struct menu *menu = NULL;
 

src/util.c

@@ -1,5 +1,7 @@
 #include <gint/display.h>
 #include <gint/std/stdio.h>
+#include <gint/gint.h>
+#include <gint/bfile.h>
 
 #include <gintctl/util.h>
 
@@ -179,3 +181,28 @@ void fkey_menu(int position, char const *text)
 }
 
 #endif /* FXCG50 */
+
+//---
+//	Screenshot saving
+//---
+
+static uint16_t const *path;
+
+void switch_screen_mono(void)
+{
+	int size = 1024;
+
+	BFile_Remove(path);
+	BFile_Create(path, BFile_File, &size);
+
+	int fd = BFile_Open(path, BFile_WriteOnly);
+	BFile_Write(fd, gint_vram, 1024);
+	BFile_Close(fd);
+}
+
+/* screen_mono(): Take a screenshot of the mono VRAM */
+void screen_mono(uint16_t const *filepath)
+{
+	path = filepath;
+	gint_switch(switch_screen_mono);
+}