Add font parser and dynamic font loader #249

include/hasp_mem.h

@@ -28,5 +28,4 @@ void hasp_free(void* ptr);
 }
 #endif
 
-
 #endif // HASP_MEM_H

src/hasp/hasp.cpp

@@ -499,30 +499,39 @@ void haspSetup(void)
     // haspFonts[0] = lv_font_load("E:/font_1.fnt");
     // haspFonts[2] = lv_font_load("E:/font_2.fnt");
 
+    /*
 #if defined(ARDUINO_ARCH_ESP32)
-    lv_ft_info_t info1;
-    info1.name   = "L:/arial.ttf";
-    info1.weight = 48;
-    info1.style  = FT_FONT_STYLE_NORMAL;
-    lv_ft_font_init(&info1);
-    haspFonts[4] = info1.font;
+    // lv_ft_info_t info1;
+    // info1.name   = "L:/arial.ttf";
+    // info1.weight = 48;
+    // info1.style  = FT_FONT_STYLE_NORMAL;
+    // lv_ft_font_init(&info1);
+    // haspFonts[4] = info1.font;
+    haspFonts[4] = get_font("arial"); // "L:/arial.ttf", 45, FT_FONT_STYLE_NORMAL);
+    LOG_WARNING(TAG_ATTR, "%s %d %x", __FILE__, __LINE__, haspFonts[4]);
 
-    lv_ft_info_t info2;
-    info2.name   = "L:/mdi.ttf";
-    info2.weight = 32;
-    info2.style  = FT_FONT_STYLE_NORMAL;
-    lv_ft_font_init(&info2);
-    haspFonts[5] = info2.font;
+    // lv_ft_info_t info2;
+    // info2.name   = "L:/mdi.ttf";
+    // info2.weight = 92;
+    // info2.style  = FT_FONT_STYLE_NORMAL;
+    // lv_ft_font_init(&info2);
+    // haspFonts[5] = info2.font;
+    haspFonts[5] = get_font("mdi"); // "L:/mdi.ttf", 80, FT_FONT_STYLE_NORMAL);
+    LOG_WARNING(TAG_ATTR, "%s %d %x", __FILE__, __LINE__, haspFonts[5]);
 
-    lv_ft_info_t info3;
-    info3.name   = "L:/robotocondensed.ttf";
-    info3.weight = 32;
-    info3.style  = FT_FONT_STYLE_NORMAL;
-    lv_ft_font_init(&info3);
-    haspFonts[6] = info3.font;
+    // lv_ft_info_t info3;
+    // info3.name   = "L:/robotocondensed.ttf";
+    // info3.weight = 48;
+    // info3.style  = FT_FONT_STYLE_NORMAL;
+    // lv_ft_font_init(&info3);
+    // haspFonts[6] = info3.font;
+    haspFonts[6] = get_font("robotocondensed"); // "L:/robotocondensed.ttf", 48, FT_FONT_STYLE_NORMAL);
+    LOG_WARNING(TAG_ATTR, "%s %d %x", __FILE__, __LINE__, haspFonts[6]);
 
     haspFonts[7] = hasp_font_load("L:/RobotoCondensedRegular.bin");
+    LOG_WARNING(TAG_ATTR, "%s %d %x", __FILE__, __LINE__, haspFonts[7]);
 #endif
+*/
 
     hasp_set_theme(haspThemeId);
 

src/hasp/hasp_attribute.cpp

@@ -228,11 +228,11 @@ static bool my_line_set_points(lv_obj_t* obj, const char* payload)
 
 static lv_font_t* haspPayloadToFont(const char* payload)
 {
+    if(Parser::is_only_digits(payload)) {
         uint8_t var = atoi(payload);
 
         switch(var) {
             case 0 ... 7:
-            // LOG_WARNING(TAG_ATTR, "%s %d %x", __FILE__, __LINE__, robotocondensed_regular_12);
                 return hasp_get_font(var);
 
             case 8:
@@ -268,6 +268,11 @@ static lv_font_t* haspPayloadToFont(const char* payload)
             default:
                 return nullptr;
         }
+    } else {
+        return get_font(payload);
+    }
+
+    return nullptr;
 }
 
 static hasp_attribute_type_t hasp_process_label_long_mode(lv_obj_t* obj, const char* payload, char** text, bool update)
@@ -611,7 +616,7 @@ static hasp_attribute_type_t hasp_local_style_attr(lv_obj_t* obj, const char* at
         case ATTR_TEXT_FONT: {
             lv_font_t* font = haspPayloadToFont(payload);
             if(font) {
-                LOG_WARNING(TAG_ATTR, "%s %d %x", __FILE__, __LINE__, *font);
+                LOG_WARNING(TAG_ATTR, "%s %d %x", __FILE__, __LINE__, font);
                 uint8_t count = 3;
                 if(obj_check_type(obj, LV_HASP_ROLLER)) count = my_roller_get_visible_row_count(obj);
                 lv_obj_set_style_local_text_font(obj, part, state, font);

src/hasp/hasp_font.cpp

@@ -0,0 +1,115 @@
+#include <string.h>
+
+#include "hasplib.h"
+#include "lv_freetype.h"
+
+#include "hasp_mem.h"
+#include "font/hasp_font_loader.h"
+
+static lv_ll_t hasp_fonts_ll;
+
+typedef struct
+{
+    const char* name; /* The name of the font file */
+    lv_font_t* font;  /* point to lvgl font */
+} hasp_font_info_t;
+
+void font_setup()
+{
+    _lv_ll_init(&hasp_fonts_ll, sizeof(lv_ft_info_t));
+}
+
+size_t font_split_payload(const char* payload)
+{
+    size_t pos = 0;
+    while(*(payload + pos) != '\0') {
+        if(Parser::is_only_digits(payload + pos)) return pos;
+        pos++;
+    }
+    return 0;
+}
+
+static lv_font_t* font_find_in_list(const char* payload)
+{
+    hasp_font_info_t* font_p = (hasp_font_info_t*)_lv_ll_get_head(&hasp_fonts_ll);
+    while(font_p) {
+        if(strcmp(font_p->name, payload) == 0) {
+            return font_p->font;
+        }
+        font_p = (hasp_font_info_t*)_lv_ll_get_next(&hasp_fonts_ll, font_p);
+    }
+
+    return NULL;
+}
+
+static lv_font_t* font_add_to_list(const char* payload)
+{
+    char filename[64];
+
+    // Try .bin file
+    snprintf_P(filename, sizeof(filename), PSTR("L:\\%s.bin"), payload);
+    lv_font_t* font = hasp_font_load(filename);
+    char* name_p    = NULL;
+
+    if(!font) {
+        // Try .ttf file
+
+        size_t pos = font_split_payload(payload);
+        if(pos > 0 && pos < 56) {
+            uint16_t size = atoi(payload + pos);
+
+            char fontname[64];
+            memset(fontname, 0, sizeof(fontname));
+            strncpy(fontname, payload, pos);
+            snprintf_P(filename, sizeof(filename), PSTR("L:\\%s.ttf"), fontname);
+
+            lv_ft_info_t info;
+            info.name   = filename;
+            info.weight = size;
+            info.style  = FT_FONT_STYLE_NORMAL;
+            if(lv_ft_font_init(&info)) {
+                font = info.font;
+            }
+        }
+    }
+
+    if(!font) {
+        // Try .otf file
+        snprintf_P(filename, sizeof(filename), PSTR("L:\\%s.otf"), payload);
+
+        lv_ft_info_t info;
+        info.name   = filename;
+        info.weight = 56;
+        info.style  = FT_FONT_STYLE_NORMAL;
+        if(lv_ft_font_init(&info)) {
+            font = info.font;
+        }
+    }
+
+    if(!font) return NULL;
+    LOG_VERBOSE(TAG_FONT, F("Loaded font %s size %d"), filename, font->line_height);
+
+    size_t len = strlen(payload);
+    name_p     = (char*)calloc(sizeof(char), len + 1);
+    if(!name_p) return NULL;
+    strncpy(name_p, payload, len);
+
+    hasp_font_info_t info;
+    info.name = name_p;
+    info.font = font;
+
+    hasp_font_info_t* info_p;
+    info_p  = (hasp_font_info_t*)_lv_ll_ins_tail(&hasp_fonts_ll);
+    *info_p = info;
+
+    return info.font;
+}
+
+// Convert the payload to a font pointer
+lv_font_t* get_font(const char* payload)
+{
+    lv_font_t* font = font_find_in_list(payload);
+    if(font) return font;
+
+    return font_add_to_list(payload);
+}

src/hasp/hasp_font.h

@@ -0,0 +1,10 @@
+/* MIT License - Copyright (c) 2019-2021 Francis Van Roie
+   For full license information read the LICENSE file in the project folder */
+
+#ifndef HASP_FONT_H
+#define HASP_FONT_H
+
+void font_setup();
+lv_font_t* get_font(const char* payload);
+
+#endif

src/hasp_gui.cpp

@@ -298,8 +298,9 @@ void guiSetup()
     LOG_TRACE(TAG_LVGL, F(D_SERVICE_STARTING));
     gui_init_lvgl();
     gui_init_images();
-    gui_init_freetype();
     gui_init_filesystems();
+    gui_init_freetype();
+    font_setup();
 
     /* Initialize the LVGL display driver with correct orientation */
 #if(TOUCH_DRIVER == 0x2046) || defined(LGFX_USE_V1) // Use native display driver to rotate display and touch

src/hasplib.h

@@ -20,6 +20,7 @@
 #include "hasp/hasp_attribute.h"
 #include "hasp/hasp_dispatch.h"
 #include "hasp/hasp_event.h"
+#include "hasp/hasp_font.h"
 #include "hasp/hasp_object.h"
 #include "hasp/hasp_page.h"
 #include "hasp/hasp_parser.h"