lib/gamnit/examples/fonts_showcase/src/fonts_showcase.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # This program is free software; you can redistribute it and/or
   4 # modify it under the terms of the Do What The Fuck You Want To
   5 # Public License, Version 2, as published by Sam Hocevar. See
   6 # http://sam.zoy.org/projects/COPYING.WTFPL for more details.
   7
   8 # Font support showcase
   9 module fonts_showcase is
  10         example
  11         app_name "gamnit fonts"
  12         app_namespace "org.gamnit.fonts_showcase"
  13         app_version(1, 0, git_revision)
  14         android_api_target 10
  15         android_manifest_activity """android:screenOrientation="sensorLandscape" """
  16 end
  17
  18 import gamnit::flat
  19 import gamnit::bmfont
  20
  21 redef class App
  22
  23         # Asset font used to display text
  24         var font = new BMFontAsset("Josefin_Sans/font.fnt")
  25
  26         # Anchor texture identifying the anchor coordinates of each `TextSprites`
  27         var anchor = new Texture("anchor.png")
  28
  29         # Bottom right corner
  30         var corner = new Texture("corner.png")
  31
  32         redef fun create_scene
  33         do
  34                 super
  35
  36                 for tex in all_root_textures do
  37                         var error = tex.error
  38                         if error != null then print_error "Texture '{tex}' failed to load: {error}"
  39                 end
  40
  41                 update_text
  42         end
  43
  44         # Draw or redraw all the `TextSprites`
  45         fun update_text
  46         do
  47                 # Remove existing text and sprites
  48                 ui_sprites.clear
  49                 var texts = new Array[TextSprites]
  50
  51                 # Shared content
  52                 var description = "The anchor icon identifies the coordinate of TextSprites::anchor."
  53                 var lorem_ipsum = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et [dolore magna](my_link asdf) aliqua."
  54                 var color = [0.0, 0.25, 0.5]
  55
  56                 # ---
  57                 # TextSprites (the interesting part)
  58
  59                 # Aligned text (no max_width)
  60                 texts.add new TextSprites(font,
  61                         ui_camera.top.offset(-400.0, 0.0, 0.0),
  62                         "Left, align=0.0:\n"+description)
  63
  64                 texts.add new TextSprites(font,
  65                         ui_camera.top.offset(-400.0, -100.0, 0.0),
  66                         "Right, align=1.0:\n"+description, align=1.0)
  67
  68                 texts.add new TextSprites(font,
  69                         ui_camera.top.offset(-400.0, -200.0, 0.0),
  70                         "Center, align=0.5:\n"+description, align=0.5)
  71
  72                 texts.add new TextSprites(font,
  73                         ui_camera.top.offset(-400.0, -300.0, 0.0),
  74                         "Weird, align=0.2:\n"+description, align=0.2)
  75
  76                 # Aligned with max width
  77                 texts.add new TextSprites(font,
  78                         ui_camera.top_left.offset(100.0, -400.0, 0.0),
  79                         "Left, max_width=400.0:\n"+lorem_ipsum,
  80                         align=0.0, max_width=400.0)
  81
  82                 texts.add new TextSprites(font,
  83                         ui_camera.top_left.offset(1000.0, -400.0, 0.0),
  84                         "Right, max_width=400.0, scale=0.66:\n"+lorem_ipsum,
  85                         align=1.0, max_width=400.0, scale=0.66)
  86
  87                 texts.add new TextSprites(font,
  88                         ui_camera.top_left.offset(300.0, -700.0, 0.0),
  89                         "Center, max_width=400.0:\n"+lorem_ipsum,
  90                         align=0.5, max_width=400.0)
  91
  92                 texts.add new TextSprites(font,
  93                         ui_camera.top_left.offset(680.0, -700.0, 0.0),
  94                         "Weird, max_width=400.0:\n"+lorem_ipsum,
  95                         align=0.2, max_width=400.0)
  96
  97                 # Max width & height
  98                 texts.add new TextSprites(font,
  99                         ui_camera.top_left.offset(1100.0, -400.0, 0.0),
 100                         "max_width & max_height:\n"+lorem_ipsum,
 101                         max_width=600.0, max_height=150.0)
 102
 103                 # Thin max_width with overflows
 104                 texts.add new TextSprites(font,
 105                         ui_camera.top_left.offset(1100.0, -600.0, 0.0),
 106                         "The 1{plu}st{pld} word of a line can always overflow:\n"+lorem_ipsum,
 107                          max_width=100.0, max_height=400.0)
 108
 109                 # No wrap
 110                 texts.add new TextSprites(font,
 111                         ui_camera.top_left.offset(1300.0, -600.0, 0.0),
 112                         "wrap=false:\nLong lines are cut short blah blah blah\n"+lorem_ipsum,
 113                         max_width=400.0, wrap=false)
 114
 115                 # Bottom align
 116                 texts.add new TextSprites(font,
 117                         ui_camera.top_left.offset(1300.0, -1000.0, 0.0),
 118                         "valign=1.0:\n"+lorem_ipsum,
 119                         max_width=400.0, valign=1.0)
 120
 121                 # Center valign
 122                 texts.add new TextSprites(font,
 123                         ui_camera.top_left.offset(1500.0, -220.0, 0.0),
 124                         "align=0.5, valign=0.5:\n"+lorem_ipsum,
 125                         max_width=400.0, align=0.5, valign=0.5)
 126
 127                 # ---
 128                 # Links
 129
 130                 for ts in texts do
 131                         for link_name, sprites in ts.links do
 132                                 print "Link: {link_name}"
 133                                 for s in sprites do s.green = 0.0
 134                         end
 135                 end
 136
 137                 # ---
 138                 # Anchors and background boxes
 139
 140                 # Gradient background for the max_width texts
 141                 var box = new CustomTexture(400.0, 200.0)
 142                 for x in 400.times do for y in 150.times do
 143                         var p = 1.0-1.0*y.to_f/150.0
 144                         p = p.sqrt
 145                         box[x, y] = color + [p]
 146                 end
 147                 box.load
 148                 for i in [4..8[ do
 149                         var t = texts[i]
 150                         ui_sprites.add new Sprite(box,
 151                                 t.anchor.offset((-t.align+0.5)*t.max_width.as(not null),
 152                                 -100.0, -1.0))
 153                 end
 154
 155                 # Plain boxes for max_width and max_height boxes
 156                 var large_box = new CustomTexture(600.0, 150.0)
 157                 large_box.fill color
 158                 large_box.load
 159                 ui_sprites.add new Sprite(large_box, texts[8].anchor.offset(300.0, -75.0, -1.0))
 160
 161                 var thin_box = new CustomTexture(100.0, 400.0)
 162                 thin_box.fill color
 163                 thin_box.load
 164                 ui_sprites.add new Sprite(thin_box, ui_camera.top_left.offset(1150.0, -800.0, -1.0))
 165
 166                 # Other TextSprites
 167                 ui_sprites.add new Sprite(box, texts[10].anchor.offset(200.0, -100.0, -1.0))
 168
 169                 var s = new Sprite(box, texts[11].anchor.offset(200.0, 100.0, -1.0))
 170                 s.rotation = pi
 171                 ui_sprites.add s
 172
 173                 ui_sprites.add new Sprite(box, texts[12].anchor.offset(0.0, 0.0, -1.0))
 174
 175                 # Add the anchor effects to all TextSprites
 176                 for t in texts do ui_sprites.add new Sprite(anchor, t.anchor)
 177
 178                 for t in texts do
 179                         # Bottom right
 180                         var br = t.anchor.offset(t.width*(1.0-t.align), -t.height*(1.0-t.valign), 1.0)
 181                         ui_sprites.add new Sprite(corner, br)
 182                 end
 183         end
 184
 185         redef fun accept_event(event)
 186         do
 187                 if event isa QuitEvent or
 188                   (event isa KeyEvent and event.name == "escape" and event.is_up) then
 189                         # Quit abruptly
 190                         exit 0
 191                 else if event isa KeyEvent and event.is_up then
 192                         update_text
 193                 end
 194
 195                 return false
 196         end
 197 end