evas_text: reduce Video Memory & RAM needed for text textures (Color Glyphs)

Summary:
Texture created for bitmap font glyph, with a fixed size in the font, this size could be much bigger than the needed size in application.
Then a scale factor is applied to these textures when drawn.

Now, instead, we will create smaller bitmaps and create texture from them with reduced texture size (that is not needed).

** This will affect both Video Memory and Ram needed to store glyphs**

Open this file {F3883874} in terminology before and after applying the patch and notice the difference.

Test Plan:
**Notes**
- You need to scroll down to make all glyphs visible, then notice Video/Ram memory

|                      | Video | Ram
|----------------------|-------|-----
| Before (Font_size=50) |  360   |  300
| After (Font_size=50) |  40   | 100
| Ration After/before   |  11%  |  33%

**I notice speed up in text rendering for small font size**

```
#include <Elementary.h>

typedef struct _APP
{
  Evas_Object *tb1;
  Evas_Object *btnLoad;
} APP;

char *text = "<align=center><color=#4DE0FFFF underline=on underline_color=#4DE0FFFF><a href='tel:1234567890'>1234567890</a></color>😀😁😂🤣😃😄😅😆😉😊😋😎😍😘😗😙😚☺🙂🤗🤔😐😑😶🙄😏😣😥😮🤐😯😪😫😴😌🤓😛😜😝🤤😒😓😔😕🙃🤑😲☹🙁😖😞😟😤😢😭😦😧😨😩😬😰😱😳😵😡😠😇🤠🤡🤥😷🤒🤕🤢🤧☻😈👿👹👺💀☠👻👽👾🤖💩😺😸😹😻😼😽🙀😿😾🙈🙉🙊👦👧👨👩👵👶👼👨‍⚕️👩‍⚕️👨‍🎓👩‍🎓👨‍🏫👩‍🏫👨‍⚖👩‍⚖👨‍🌾👩‍🌾👨‍🍳👩‍🍳👨‍🔧👩‍🔧👨‍🏭👩‍🏭👨‍💼👩‍💼👨‍🔬👩‍🔬👨‍💻👩‍💻👨‍🎤👩‍🎤👨‍🎨👩‍🎨👨‍✈️👩‍✈️👨‍🚀👩‍🚀👨‍🚒👩‍🚒👮‍♂️👮‍♀️🕵️‍♂️🕵️‍♀️💂‍♂️💂‍♀️👷‍♂️👷‍♀️👳‍♂️👳‍♀️👱‍♂️👱‍♀️🎅🤶👸🤴👰🤵🤰👲🙍‍♂️🙍‍♀️🙎‍♂️🙎‍♀️🙅‍♂️🙅‍♀️🙆‍♂️🙆‍♀️💁‍♂️💁‍♀️🙋‍♂️🙋‍♀️🙇‍♂️🙇‍♀️🤦‍♂️🤦‍♀️🤷‍♂️🤷‍♀️💆‍♂️💆‍♀️💇‍♂️💇‍♀️🚶‍♂️🚶‍♀️🏃‍♂️🏃‍♀️💃🕺👯‍♂️👯‍♀️🕴🗣👤👥👫👬👭💏💑👪👨‍👩‍👧👨‍👩‍👧‍👦👨‍👩‍👦‍👦👨‍👩‍👧‍👧👨‍👦👨‍👦‍👦👨‍👧👨‍👧‍👦👨‍👧‍👧👩‍👦👩‍👦‍👦👩‍👧👩‍👧‍👦👩‍👧‍👧💪🤳👈👉☝️👆🖕👇✌🤞🖖🤘👊🖐✋👌👍👎✊👊🤛🤜🤚👋👏✍👐🙌🙏🤝💅👂👃👣👀👁👅👄💋💘❤💓💔💕💖💗💙💚💛💜🖤💝💞💟❣💌💤💢💣💥💦💨💫💬🗨🗯💭🕳👓🕶👔👕👖👗👘👙👚👛👜👝🛍🎒👞👟👠👡👢👑👒🎩🎓⛑📿💄💍💎🐵🐒🦍🐶🐕🐩🐺🦊🐱🐈🦁🐯🐅🐆🐴🐎🦌🦄🐮🐂🐃🐄🐷🐖🐗🐽🐏🐑🐐🐪🐫🐘🦏🐭🐁🐀🐹🐰🐇🐿🦇🐻🐨🐼🐾🦃🐔🐓🐣🐤🐥🐦🐧🕊🦅🦆🦉🐸🐊🐢🦎🐍🐲🐉🐳🐋🐬🐟🐠🐡🦈🐙🐚🦀🦐🦑🦋🐌🐛🐜🐝🐞🕷🕸🦂💐🌸💮🏵🌹🥀🌺🌻🌼🌷⚘🌱🌲🌳🌴🌵🌾🌿☘🍀🍁🍂🍃🍇🍈🍉🍊🍋🍌🍍🍎🍏🍐🍑🍒🍓🍅🥝🥑🍆🥔🥕🌽🌶🥒🍄🥜🌰🍞🥐🥖🥞🧀🍖🍗🥓🍔🍟🍕🌭🌮🌯🥙🥚🍳🥘🍲🥗🍿🍱🍘🍙🍚🍛🍜🍝🍠🍢🍣🍤🍥🍡🍦🍧🍨🍩🍪🎂🍰🍫🍬🍭🍮🍯🍼🥛☕🍵🍶🍾🍷🍸🍹🍺🍻🥂🍽🍴🥄🔪🏺🎃🎄🎆🎇✨🎈🎉🎊🎋🎍🎎🎏🎐🎑🎀🎁🎗🎟🎫🎖🏆🏅🥇🥈🥉⚽️⚾️🏀🏐🏈🏉🎾🎱🎳🏏🏑🏒🏓🏸🥊🥋🥅🎯⛳🏌️‍♂️🏌️‍♀️⛸🎣🎽🎿⛷🏂🏄‍♂️🏄‍♀️🏇🏊‍♂️🏊‍♀️⛹️‍♂️⛹️‍♀️🏋️‍♂️🏋️‍♀️🚴‍♂️🚴‍♀️🚵‍♂️🚵‍♀️🏎🏍🤸‍♂️🤸‍♀️🤼‍♂️🤼‍♀️🤽‍♂️🤽‍♀️🤾‍♂️🤾‍♀️🤺🤹‍♂️🤹‍♀️🎮🕹🎲♠️♥️♦️♣️🃏🀄🎴🌍🌎🌏🌐🗺🏔⛰🌋🗻🏕🏖🏜🏝🏞🏟🏛🏗🏘🏙🏚🏠🏡🏢🏣🏤🏥🏦🏨🏩🏪🏫🏬🏭🏯🏰💒🗼🗽⛪🕌🕍⛩🕋⛲⛺🌁🌃🌄🌅🌆🌇🌉⛼♨️🌌🎠🎡🎢💈🎪🎭🖼🎨🎰🚂🚃🚄🚅🚆🚇🚈🚉🚊🚝🚞🚋🚌🚍🚎🚐🚑🚒🚓🚔🚕🚖🚗🚘🚙🚚🚛⛟🚜🚲🛴🛵🚏🛣🛤⛽🚨🚥🚦🚧🛑⚓⛵🚣‍♂️🚣‍♀️🛶🚤🛳⛴🛥🚢✈🛩🛫🛬💺🚁🚟🚠🚡🚀🛰🛎🚪🛌🛏🛋🚽🚿🛀🛁⌛⏳⌚⏰⏱⏲🕰🕛🕧🕐🕜🕑🕝🕒🕞🕓🕟🕔🕠🕕🕡🕖🕢🕗🕣🕘🕤🕙🕥🕚🕦🌑🌒🌓🌔🌕🌖🌗🌘🌙🌚🌛🌜🌡☀️🌝🌞⭐🌟🌠☁️⛅⛈🌤🌥🌦🌧🌨🌩🌪🌫🌬🌀🌈🌂☂️☔⛱⚡❄☃️⛄☄🔥💧🌊🔇🔈🔉🔊📢📣📯🔔🔕🎼🎵🎶🎙🎚🎛🎤🎧📻🎷🎸🎹🎺🎻🥁📱📲☎️📞📟📠🔋🔌💻🖥🖨⌨🖱🖲💽💾💿📀🎥🎞📽🎬📺📷📸📹📼🔍🔎🔬🔭📡🕯💡🔦🏮📔📕📖📗📘📙📚📓📒📃📜📄📰🗞📑🔖🏷💰💴💵💶💷💸💳💱💲✉📧📨📩📤📥📦📫📪📬📭📮🗳✏✒🖋🖊🖌🖍📝💼📁📂🗂📅📆🗒🗓📇📈📉📊📋📌📍📎🖇📏📐✂️🗃🗄🗑🔒🔓🔏🔐🔑🗝🔨⛏⚒🛠🗡⚔🔫🏹🛡🔧🔩⚙🗜⚗⚖🔗⛓💉💊🚬⚰⚱🗿🛢🔮🔮🏧🚮🚰♿🚹🚺🚻🚼🚾🛂🛃🛄🛅⚠️🚸⛔🚫🚳🚭🚯🚱🚷📵🔞☢☣⬆️↗️➡️↘️⬇️↙️⬅️↖️↕️↔️↩↪⤴️⤵️🔃🔄🔙🔚🔛🔜🔝🛐⚛🕉✡☸☯️☦☮🕎🔯♈♉♊♋♌♍♎♏♐♑♒♓⛎🔀🔁🔂▶️⏩⏭⏯◀️⏪⏮🔼⏫🔽⏬⏸⏹⏺⏏🎦🔅🔆📶📳📴♻️📛⚜🔰🔱⭕✅☑✔✖❌❎➕♀️♂️⚕➖➗➰➿〽✳✴❇⁉️❓❔❕❗〰🔟💯🔠🔡🔢🔣🔤🅰️🆎️🅱️🆑️🆒️🆓️ℹ🆔️Ⓜ️🆕️🆖️🅾️🆗️🅿️🆘️🆙️🆚️🈁🈂🈷🈶🈯🉐🈹🈚🈲🉑🈸🈴🈳㊗㊙🈺🈵▫️◻◼◽◾⬛⬜🔶️🔷️🔸️🔹️🔺️🔻💠🔘🔲🔳⚪⚫🔴🔵🏁🚩🏴🏳🏳️‍🌈⚀⚁⚂⚃⚄⚅⛾♾🇦🇨🇦🇩🇦🇪🇦🇫🇦🇬🇦🇮🇦🇱🇦🇲🇦🇴🇦🇶🇦🇷🇦🇸🇦🇹🇦🇺🇦🇼🇦🇽🇦🇿🇧🇦🇧🇧🇧🇩🇧🇪🇧🇫🇧🇬🇧🇭🇧🇮🇧🇯🇧🇱🇧🇲🇧🇳🇧🇴🇧🇶🇧🇷🇧🇸🇧🇹🇧🇼🇧🇾🇧🇿🇨🇦🇨🇨🇨🇩🇨🇫🇨🇬🇨🇭🇨🇮🇨🇰🇨🇱🇨🇲🇨🇳🇨🇴🇨🇷🇨🇺🇨🇻🇨🇼🇨🇽🇨🇾🇨🇿🇩🇪🇩🇯🇩🇰🇩🇲🇩🇴🇩🇿🇪🇨🇪🇪🇪🇬🇪🇭🇪🇷🇪🇸🇪🇹🇪🇺🇫🇮🇫🇯🇫🇰🇫🇲🇫🇴🇫🇷🇬🇦🇬🇧🇬🇩🇬🇪🇬🇫🇬🇬🇬🇭🇬🇮🇬🇱🇬🇲🇬🇳🇬🇵🇬🇶🇬🇷🇬🇸🇬🇹🇬🇺🇬🇼🇬🇾🇭🇰🇭🇲🇭🇳🇭🇷🇭🇹🇭🇺🇮🇨🇮🇩🇮🇪🇮🇱🇮🇲🇮🇳🇮🇴🇮🇶🇮🇷🇮🇸🇮🇹🇯🇪🇯🇲🇯🇴🇯🇵🇰🇪🇰🇬🇰🇭🇰🇮🇰🇲🇰🇳🇰🇵🇰🇷🇰🇼🇰🇾🇰🇿🇱🇦🇱🇧🇱🇨🇱🇮🇱🇰🇱🇷🇱🇸🇱🇹🇱🇺🇱🇻🇱🇾🇲🇦🇲🇨🇲🇩🇲🇪🇲🇬🇲🇭🇲🇰🇲🇱🇲🇲🇲🇳🇲🇴🇲🇵🇲🇶🇲🇷🇲🇸🇲🇹🇲🇺🇲🇻🇲🇼🇲🇽🇲🇾🇲🇿🇳🇦🇳🇨🇳🇪🇳🇫🇳🇬🇳🇮🇳🇱🇳🇴🇳🇵🇳🇷🇳🇺🇳🇿🇴🇲🇵🇦🇵🇪🇵🇫🇵🇬🇵🇭🇵🇰🇵🇱🇵🇲🇵🇳🇵🇷🇵🇸🇵🇹🇵🇼🇵🇾🇶🇦🇷🇪🇷🇴🇷🇸🇷🇺🇷🇼🇸🇦🇸🇧🇸🇨🇸🇩🇸🇪🇸🇬🇸🇭🇸🇮🇸🇰🇸🇱🇸🇲🇸🇳🇸🇴🇸🇷🇸🇸🇸🇹🇸🇻🇸🇽🇸🇾🇸🇿🇹🇦🇹🇨🇹🇩🇹🇫🇹🇬🇹🇭🇹🇯🇹🇰🇹🇱🇹🇲🇹🇳🇹🇴🇹🇷🇹🇹🇹🇻🇹🇼🇹🇿🇺🇦🇺🇬🇺🇳🇺🇸🇺🇾🇺🇿🇻🇦🇻🇨🇻🇪🇻🇬🇻🇮🇻🇳🇻🇺🇼🇫🇼🇸🇽🇰🇾🇪🇾🇹🇿🇦🇿🇲🇿🇼8<br/><br/><br/><br/>Sent from my Samsung Galaxy smartphone.</align>";

int font_size = 100;
void _button_clicked(void *data, Evas_Object *obj, void *event_info)
{
   APP *app = data;
   font_size = font_size - font_size/5;
   char buffer[100] = {0};
   sprintf(buffer, "DEFAULT='font=NotoColorEmoji font_size=%i color=red ellipsis=-1.0 wrap=mixed'", font_size);

   Evas_Textblock_Style *style = evas_textblock_style_new();
   evas_textblock_style_set(style, buffer);
   evas_object_textblock_style_set(app->tb1, style);
   evas_textblock_style_free(style);

   sprintf(buffer, "font_size = %i",font_size);
   elm_object_text_set(app->btnLoad, buffer);

   style = NULL;
}

EAPI_MAIN int
elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
{
  APP *app = calloc(1, sizeof(APP));
  Evas_Object *win, *scroller1, *scroller2, *box;

  elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);

  win = elm_win_util_standard_add("", "");
  elm_win_autodel_set(win, EINA_TRUE);

  box = elm_box_add(win);
  evas_object_size_hint_weight_set(box, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
  evas_object_size_hint_align_set(box, EVAS_HINT_FILL, EVAS_HINT_FILL);
  scroller1 = elm_scroller_add(win);
  evas_object_size_hint_weight_set(scroller1, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
  evas_object_size_hint_align_set(scroller1, EVAS_HINT_FILL, EVAS_HINT_FILL);

  //evas_text_cache_policy_set(EVAS_TEXT_CACHE_POLICY_TEXTURE ,EVAS_TEXT_CACHE_NONE);

  app->tb1 = evas_object_textblock_add(win);
  Evas_Textblock_Style *style = evas_textblock_style_new();
  char buffer[100] = {0};
  sprintf(buffer, "DEFAULT='font=NotoColorEmoji font_size=%i color=red ellipsis=-1.0 wrap=mixed'", font_size);
  evas_textblock_style_set(style, buffer);
  evas_object_textblock_style_set(app->tb1, style);
  evas_textblock_style_free(style);
  style = NULL;

  int w,h;
  evas_object_textblock_text_markup_set(app->tb1, "");
  evas_object_size_hint_min_set(app->tb1, 360, 720);
  elm_object_content_set(scroller1, app->tb1);
  elm_box_pack_end(box, scroller1);
  elm_object_content_set(win, box);

  app->btnLoad = elm_button_add(win);
  sprintf(buffer, "font_size = %i",font_size);
  elm_object_text_set(app->btnLoad, buffer);
  evas_object_smart_callback_add(app->btnLoad, "clicked", _button_clicked, app);
  evas_object_show(app->btnLoad);
  evas_object_move(app->btnLoad, 0, 20);
  evas_object_resize(app->btnLoad, 150, 20);

  evas_object_textblock_text_markup_set(app->tb1, text);
  evas_object_textblock_size_formatted_get(app->tb1, &w, &h);
  evas_object_size_hint_min_set(app->tb1, 800, w/800 + h + 150);

  evas_object_resize(win, 800, 800);
  evas_object_show(box);
  evas_object_show(scroller1);
  evas_object_show(scroller2);
  evas_object_show(win);
  elm_run();

  return 0;
}
ELM_MAIN()
```

Reviewers: raster, woohyun, bu5hm4n, zmike, Hermet, segfaultxavi

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Maniphest Tasks: T8712

Differential Revision: https://phab.enlightenment.org/D11814

src/lib/evas/common/evas_font.h

@@ -294,7 +294,8 @@ struct _RGBA_Font_Int
    Eina_Hash        *kerning;
    Fash_Glyph       *fash;
    unsigned int      size;
-   float             scale_factor;
+   double            scale_factor;
+   Eina_Bool         is_resized;
    int               real_size;
    int               max_h;
    int               references;

src/lib/evas/common/evas_font_draw.c

@@ -105,8 +105,12 @@ evas_common_font_rgba_draw(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y,
              if ((fg->fi->bitmap_scalable & EFL_TEXT_FONT_BITMAP_SCALABLE_COLOR) &&
                  FT_HAS_COLOR(fg->fi->src->ft.face))
                {
-                  w *= fg->fi->scale_factor;
-                  h *= fg->fi->scale_factor;
+                  if ( !fg->fi->is_resized )
+                    {
+                       w *= fg->fi->scale_factor;
+                       h *= fg->fi->scale_factor;
+                    }
+
                }
           }
 

src/lib/evas/common/evas_font_load.c

@@ -460,9 +460,14 @@ evas_common_font_int_load_complete(RGBA_Font_Int *fi)
                       fi->bitmap_scalable & EFL_TEXT_FONT_BITMAP_SCALABLE_COLOR)
                     {
                        if (fi->real_size > 0)
-                         fi->scale_factor = (float)fi->size * 64.0 / (float)fi->real_size;
+                         {
+                           fi->scale_factor = (double)fi->size * 64.0 / (double)fi->real_size;
+                           fi->is_resized = EINA_FALSE;
+                           if ((fi->scale_factor <= 0.9) && (fi->scale_factor != 0))
+                             fi->is_resized = EINA_TRUE;
+                         }
                        else
-                         fi->scale_factor = (float)64.0;
+                         fi->scale_factor = 64.0;
                     }
                }
           }

src/lib/evas/common/evas_font_main.c

@@ -857,6 +857,41 @@ evas_common_font_int_cache_glyph_render(RGBA_Font_Glyph *fg)
      {
         fg->glyph_out->rle = NULL;
         fg->glyph_out->bitmap.rle_alloc = EINA_FALSE;
+        if (fi->is_resized)
+          {
+             int w = fbg->bitmap.width;
+             int h = fbg->bitmap.rows;
+
+             RGBA_Image src = {0};
+             src.image.data = (DATA32 *) fbg->bitmap.buffer;
+             src.cache_entry.w = w;
+             src.cache_entry.h = h;
+             src.cache_entry.flags.alpha = 1;
+
+             RGBA_Image dst = {0};
+             dst.cache_entry.w = w * fi->scale_factor;
+             dst.cache_entry.h = h * fi->scale_factor;
+             dst.image.data = malloc(dst.cache_entry.w * dst.cache_entry.h * 4);
+             dst.cache_entry.flags.alpha = 1;
+
+             evas_common_scale_rgba_smooth_draw(&src, &dst,
+                                        0, 0, src.cache_entry.w , src.cache_entry.h,
+                                        0xffffffff, EVAS_RENDER_COPY,
+                                        0, 0, src.cache_entry.w , src.cache_entry.h,
+                                        0, 0, dst.cache_entry.w, dst.cache_entry.h,
+                                        NULL, 0, 0);
+
+             fg->glyph_out->bitmap.rows = dst.cache_entry.h;
+             fg->glyph_out->bitmap.width = dst.cache_entry.w;
+             fg->glyph_out->bitmap.buffer = (unsigned char *) dst.image.data;
+             fg->glyph_out->bitmap.pitch = dst.cache_entry.w * 4;
+ 
+             fg->glyph_out->rle = NULL;
+             fg->glyph_out->bitmap.rle_alloc = EINA_TRUE;
+             // this may be technically incorrect as we go and free a bitmap buffer
+             // behind the ftglyph's back...
+             FT_Bitmap_Done(evas_ft_lib, &(fbg->bitmap));
+          }
      }
 
    return EINA_TRUE;