From e5fcdeda041831cb326f1d1963c0651b78041788 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Fri, 12 Jun 2020 00:51:04 +0200
Subject: implemented font metrics

---
 code/fe310/eos/eve/eve.c         | 26 ++++++++++++++++++++++++--
 code/fe310/eos/eve/eve.h         |  3 +++
 code/fe310/eos/eve/screen/font.c |  9 ++++++++-
 code/fe310/eos/eve/screen/font.h |  3 ++-
 code/fe310/eos/eve/widget/text.c | 12 ++++++------
 5 files changed, 43 insertions(+), 10 deletions(-)

(limited to 'code/fe310/eos/eve')

diff --git a/code/fe310/eos/eve/eve.c b/code/fe310/eos/eve/eve.c
index 0ab5427..1db5744 100644
--- a/code/fe310/eos/eve/eve.c
+++ b/code/fe310/eos/eve/eve.c
@@ -70,6 +70,28 @@ void eve_write32(uint32_t addr, uint32_t data) {
     eve_spi_cs_clear();
 }
 
+void eve_readb(uint32_t addr, uint8_t *b, size_t size) {
+    int i;
+
+    eve_spi_cs_set();
+    eve_spi_xchg32(addr << 8, 0);
+    for (i=0; i<size; i++) {
+        b[i] = eve_spi_xchg8(0, 0);
+    }
+    eve_spi_cs_clear();
+}
+
+void eve_writeb(uint32_t addr, uint8_t *b, size_t size) {
+    int i;
+
+    eve_spi_cs_set();
+    eve_spi_xchg24(addr | EVE_MEM_WRITE, 0);
+    for (i=0; i<size; i++) {
+        eve_spi_xchg8(b[i], 0);
+    }
+    eve_spi_cs_clear();
+}
+
 static void _dl_inc(uint32_t i) {
     _dl_addr += i;
 }
@@ -316,9 +338,9 @@ static int _init(void) {
     /* do not set PCLK yet - wait for just after the first display list */
 
     /* disable Audio */
-    eve_write8(REG_VOL_PB, 0x00);           /* turn recorded audio volume down */
+    eve_write16(REG_SOUND, 0x0000);         /* set synthesizer to silence */
     eve_write8(REG_VOL_SOUND, 0x00);        /* turn synthesizer volume off */
-    eve_write16(REG_SOUND, 0x6000);         /* set synthesizer to mute */
+    eve_write8(REG_VOL_PB, 0x00);           /* turn recorded audio volume off */
 
     /* write a basic display-list to get things started */
     eve_dl_start(EVE_RAM_DL);
diff --git a/code/fe310/eos/eve/eve.h b/code/fe310/eos/eve/eve.h
index c27d81f..5fd58df 100644
--- a/code/fe310/eos/eve/eve.h
+++ b/code/fe310/eos/eve/eve.h
@@ -31,6 +31,9 @@ void eve_write8(uint32_t addr, uint8_t data);
 void eve_write16(uint32_t addr, uint16_t data);
 void eve_write32(uint32_t addr, uint32_t data);
 
+void eve_readb(uint32_t addr, uint8_t *b, size_t size);
+void eve_writeb(uint32_t addr, uint8_t *b, size_t size);
+
 void eve_dl_start(uint32_t addr);
 void eve_dl_write(uint32_t dl);
 void eve_dl_swap(void);
diff --git a/code/fe310/eos/eve/screen/font.c b/code/fe310/eos/eve/screen/font.c
index 26e7cf0..1be462d 100644
--- a/code/fe310/eos/eve/screen/font.c
+++ b/code/fe310/eos/eve/screen/font.c
@@ -4,14 +4,21 @@
 #include "font.h"
 
 void eve_font_init(EVEFont *font, uint8_t font_id) {
+    uint32_t p;
+
+    p = eve_read32(EVE_ROM_FONT_ADDR);
+    p += (148 * (font_id - 16));
     font->id = font_id;
+    font->w = eve_read32(p + 136);
+    font->h = eve_read32(p + 140);
+    eve_readb(p, font->w_ch, 128);
 }
 
 uint16_t eve_font_string_width(EVEFont *font, char *s) {
     uint16_t r = 0;
 
     while (*s) {
-        r += font->w[*s];
+        r += font->w_ch[*s];
         s++;
     }
     return r;
diff --git a/code/fe310/eos/eve/screen/font.h b/code/fe310/eos/eve/screen/font.h
index 24b745e..a46c942 100644
--- a/code/fe310/eos/eve/screen/font.h
+++ b/code/fe310/eos/eve/screen/font.h
@@ -2,8 +2,9 @@
 
 typedef struct EVEFont {
     uint8_t id;
-    uint8_t w[128];
+    uint8_t w;
     uint8_t h;
+    uint8_t w_ch[128];
 } EVEFont;
 
 void eve_font_init(EVEFont *font, uint8_t font_id);
diff --git a/code/fe310/eos/eve/widget/text.c b/code/fe310/eos/eve/widget/text.c
index 834729f..ae83656 100644
--- a/code/fe310/eos/eve/widget/text.c
+++ b/code/fe310/eos/eve/widget/text.c
@@ -284,7 +284,7 @@ void eve_textw_putc(void *_page, int c) {
         switch (c) {
             case CH_BS:
                 if (cursor1->ch > 0) {
-                    cursor1->x -= widget->font->w[*(text - 1)];
+                    cursor1->x -= widget->font->w_ch[*(text - 1)];
                     memmove(text - 1, text, widget->text_len - cursor1->ch + 1);
                     widget->text_len--;
                     cursor1->ch--;
@@ -300,7 +300,7 @@ void eve_textw_putc(void *_page, int c) {
                 break;
             default:
                 if (widget->text_len < (widget->text_size - 1)) {
-                    cursor1->x += widget->font->w[c];
+                    cursor1->x += widget->font->w_ch[c];
                     memmove(text + 1, text, widget->text_len - cursor1->ch + 1);
                     *text = c;
                     widget->text_len++;
@@ -345,7 +345,7 @@ int eve_textw_update(EVETextWidget *widget, EVEPage *page, uint16_t line) {
     line_b = LINE_EMPTY;
     for (i=LINE_START(widget, line); i<widget->text_size; i++) {
         ch = widget->text[i];
-        ch_w = widget->font->w[ch];
+        ch_w = widget->font->w_ch[ch];
         if (ch <= 0x20) {
             if ((ch == '\n') || (ch == '\0')) {
                 if (widget->line[line] == i) return line;
@@ -406,7 +406,7 @@ void eve_textw_cursor_update(EVETextWidget *widget, EVETextCursor *cursor) {
     x = 0;
     for (i=LINE_START(widget, cursor->line); i<LINE_END(widget, cursor->line); i++) {
         if (cursor->ch == i) break;
-        x += widget->font->w[widget->text[i]];
+        x += widget->font->w_ch[widget->text[i]];
     }
     cursor->x = x;
 }
@@ -430,12 +430,12 @@ void eve_textw_cursor_set(EVETextWidget *widget, EVETextCursor *cursor, uint8_t
     _x = 0;
     _d = x;
     for (i=LINE_START(widget, cursor->line); i<LINE_END(widget, cursor->line); i++) {
-        _x += widget->font->w[widget->text[i]];
+        _x += widget->font->w_ch[widget->text[i]];
         if (_x >= x) {
             if (_x - x < _d) {
                 i++;
             } else {
-                _x -= widget->font->w[widget->text[i]];
+                _x -= widget->font->w_ch[widget->text[i]];
             }
             break;
         } else {
-- 
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