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annotate tests/test_font.nim @ 424:54c5b933cbfc

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add: word-wrapping for texts
author Sam <sam@basx.dev>
date Sat, 03 Feb 2024 19:33:57 +0700
parents a03b6db25282
children 1e3c242435af
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1 import std/unicode
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2
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3 import semicongine
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4
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5
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6 proc main() =
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7 # setup engine
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8 var engine = initEngine("Test fonts")
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9 engine.initRenderer([])
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10
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11 # build scene
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12 var scene = Scene(name: "main")
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13 # var font = loadFont("DejaVuSans.ttf", lineHeightPixels=90'f32, charset="abcdefghijklmnopqrstuvwxyz ".toRunes)
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14 var font = loadFont("DejaVuSans.ttf", lineHeightPixels = 210'f32)
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15 var main_text = font.initText("", maxLen = 255, color = newVec4f(1, 0.15, 0.15, 1), scale = 0.0005, maxWidth = 1.0)
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16 var help_text = font.initText("""Controls
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17
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18 Horizontal alignment:
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19 F1: Left
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20 F2: Center
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21 F3: Right
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22 Vertical alignment:
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23 F4: Top
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24 F5: Center
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25 F6: Bottom""", scale = 0.0002, position = newVec2f(0, 0), horizontalAlignment = Left, verticalAlignment = Top)
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26 scene.add main_text
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27 scene.add help_text
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28 engine.loadScene(scene)
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30 while engine.updateInputs() == Running and not engine.keyIsDown(Escape):
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31 if engine.windowWasResized():
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32 var winSize = engine.getWindow().size
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33 main_text.aspect_ratio = winSize[0] / winSize[1]
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34 help_text.aspect_ratio = winSize[0] / winSize[1]
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35 help_text.position = newVec2f(-0.99, -0.99)
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36
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37 # add character
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38 if main_text.text.len < main_text.maxLen - 1:
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39 for c in [Key.A, Key.B, Key.C, Key.D, Key.E, Key.F, Key.G, Key.H, Key.I,
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40 Key.J, Key.K, Key.L, Key.M, Key.N, Key.O, Key.P, Key.Q, Key.R, Key.S,
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41 Key.T, Key.U, Key.V, Key.W, Key.X, Key.Y, Key.Z]:
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42 if engine.keyWasPressed(c):
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43 if engine.keyIsDown(ShiftL) or engine.keyIsDown(ShiftR):
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44 main_text.text = main_text.text & ($c).toRunes
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45 else:
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46 main_text.text = main_text.text & ($c).toRunes[0].toLower()
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47 if engine.keyWasPressed(Enter):
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48 main_text.text = main_text.text & Rune('\n')
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49 if engine.keyWasPressed(Space):
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50 main_text.text = main_text.text & Rune(' ')
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51
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52 # remove character
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53 if engine.keyWasPressed(Backspace) and main_text.text.len > 0:
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54 main_text.text = main_text.text[0 ..< ^1]
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55
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56 # alignemtn with F-keys
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57 if engine.keyWasPressed(F1): main_text.horizontalAlignment = Left
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58 elif engine.keyWasPressed(F2): main_text.horizontalAlignment = Center
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59 elif engine.keyWasPressed(F3): main_text.horizontalAlignment = Right
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60 elif engine.keyWasPressed(F4): main_text.verticalAlignment = Top
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61 elif engine.keyWasPressed(F5): main_text.verticalAlignment = Center
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62 elif engine.keyWasPressed(F6): main_text.verticalAlignment = Bottom
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64 main_text.text = main_text.text & Rune('_')
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65 main_text.refresh()
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66 main_text.text = main_text.text[0 ..< ^1]
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67 help_text.refresh()
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68 engine.renderScene(scene)
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69 engine.destroy()
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72 when isMainModule:
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73 main()