PyCairo模块简单示例代码

milkyjing

说明

对于TCAX 1.0.0以前的版本, 需要先添加PyCairo模块, 下载地址 http://www.tcax.org/forum.php?mod=viewthread&tid=209, 推荐直接升级到1.0.0
附件为完整工程.
本例子仅作为一个展示用例. 实际上cairo是很强大的2D矢量绘图工具

1. from tcaxPy import *
   
2. from util.cairo import *
   
3. 
   
4. def tcaxPy_Init():
   
5.     global Font
   
6.     _Fs = GetVal(val_FontSize)
   
7.     _FileName = GetVal(val_FontFileName)
   
8.     _FaceID = GetVal(val_FaceID)
   
9.     Font = InitFont(_FileName, _FaceID, _Fs * 4, GetVal(val_Spacing), GetVal(val_SpaceScale), MakeRGB(0, 0, 0), 0, False)
   
10. 
    
11. def tcaxPy_Fin():
    
12.     FinFont(Font)
    
13. 
    
14. def tcaxPy_User():
    
15.     file_name = GetVal(val_OutFile) + '.tcas'
    
16.     fx_width = GetVal(val_ResolutionX)
    
17.     fx_height = GetVal(val_ResolutionY)
    
18.     fx_fps = GetVal(val_FXFPS)
    
19.     TCAS_FILE = CreateTcasFile(file_name, fx_width, fx_height, fx_fps)
    
20.     TCAS_BUF = []
    
21.     surface = ImageSurface(FORMAT_ARGB32, fx_width, fx_height)
    
22.     ctx = Context(surface)
    
23.     # object 1
    
24.     ctx.set_line_width(2)
    
25.     ctx.set_source_rgb(0.69, 0.19, 0)
    
26.     ctx.arc(fx_width / 2, fx_height / 2, fx_height / 20, 0, 2 * pi)
    
27.     ctx.stroke_preserve()
    
28.     ctx.set_source_rgb(0.3, 0.4, 0.6)
    
29.     ctx.fill()
    
30.     # object 2
    
31.     ctx.set_line_join(LINE_JOIN_ROUND)
    
32.     ctx.set_line_cap(LINE_CAP_ROUND)
    
33.     ctx.translate(300, 200)
    
34.     ctx.scale(10, 10)
    
35.     AssDraw(ctx, 'm 20 0  b  20 10  30 20  40 20  b  30 20  20 30  20 40  b  20 30  10 20  0 20  b  10 20  20 10  20 0')
    
36.     ctx.set_source_rgb(0.69, 0.19, 1)
    
37.     ctx.stroke()
    
38.     # object 3
    
39.     ctx.scale(1 / 10, 1 / 10)
    
40.     ctx.translate(-100, -100)
    
41.     AssDraw(ctx, 'm 69 67 l 69 67 l 69 67 l 69 63 l 69 59 l 70 56 l 72 58 l 76 49 l 74 48 l 76 44 l 77 43 l 71 34 l 67 21 l 67 17 l 71 19 l 77 29 l 81 40 l 87 28 l 85 23 l 84 16 l 86 15 l 89 19 l 90 25 l 95 14 l 103 5 l 100 16 l 95 26 l 99 26 l 103 28 l 99 31 l 94 30 l 86 43 l 95 42 l 106 45 l 103 49 l 93 49 l 86 48 l 86 50 l 84 53 l 82 52 l 73 68 l 76 69 l 88 68 l 88 66 l 94 66 l 96 67 l 98 58 l 108 48 l 111 51 l 110 56 l 104 63 l 100 68 l 113 68 l 114 64 l 119 60 l 120 62 l 120 67 l 117 69 l 128 69 l 137 72 l 134 73 l 127 74 l 117 74 l 120 79 l 120 83 l 117 82 l 114 79 l 113 74 l 100 75 l 105 84 l 108 84 l 109 86 l 108 86 l 111 95 l 111 100 l 106 97 l 102 91 l 95 78 l 92 78 l 90 75 l 73 75 l 82 91 l 83 90 l 86 94 l 86 96 l 86 94 l 97 95 l 100 96 l 101 98 l 99 102 l 96 104 l 94 104 l 94 103 l 85 101 l 92 113 l 97 113 l 98 115 l 98 116 l 94 116 l 98 126 l 100 131 l 100 134 l 97 131 l 90 119 l 87 123 l 85 122 l 86 117 l 88 116 l 82 104 l 79 112 l 80 114 l 78 117 l 70 119 l 69 114 l 76 102 l 78 101 l 75 95 l 77 94 l 69 79 l 67 82 l 69 85 l 66 90 l 63 88 l 61 92 l 61 96 l 59 101 l 57 100 l 60 102 l 64 109 l 68 117 l 68 123 l 64 122 l 61 119 l 59 119 l 57 116 l 59 114 l 55 104 l 52 110 l 50 116 l 48 118 l 51 120 l 52 124 l 52 126 l 49 125 l 46 122 l 42 129 l 40 134 l 35 136 l 36 131 l 37 127 l 43 119 l 38 119 l 36 117 l 37 116 l 41 115 l 44 116 l 51 102 l 42 103 l 40 106 l 38 106 l 36 105 l 36 103 l 33 101 l 31 99 l 35 96 l 39 96 l 48 96 l 50 98 l 52 98 l 52 96 l 54 92 l 56 92 l 58 86 l 56 84 l 60 80 l 61 80 l 66 74 l 61 75 l 58 78 l 55 78 l 53 77 l 53 75 l 46 75 l 47 76 l 46 77 l 42 77 l 36 89 l 34 93 l 29 95 l 27 92 l 27 88 l 27 85 l 28 83 l 32 83 l 37 75 l 24 75 l 24 76 l 21 81 l 18 82 l 17 80 l 18 77 l 20 74 l 10 74 l 2 72 l 6 70 l 20 70 l 18 67 l 17 64 l 18 61 l 20 62 l 22 65 l 24 68 l 23 69 l 37 70 l 32 62 l 28 62 l 27 60 l 28 56 l 27 52 l 29 49 l 31 49 l 35 53 l 41 65 l 41 67 l 45 68 l 53 69 l 53 67 l 54 65 l 58 66 l 60 68 l 64 69 l 61 66 l 58 64 l 57 58 l 54 52 l 52 53 l 51 50 l 51 49 l 46 50 l 38 50 l 31 47 l 34 42 l 36 41 l 38 39 l 41 39 l 42 42 l 45 42 l 50 43 l 44 31 l 44 32 l 38 32 l 35 30 l 37 27 l 41 27 l 44 28 l 38 20 l 35 12 l 35 6 l 38 10 l 43 16 l 46 24 l 48 20 l 51 19 l 52 23 l 50 27 l 48 27 l 55 40 l 57 32 l 56 29 l 58 27 l 60 26 l 61 24 l 65 25 l 67 28 l 63 39 l 61 43 l 59 43 l 61 50 l 61 51 l 65 58 l 66 56 l 68 56 l 68 60 l 67 62')
    
42.     ctx.set_source_rgb(0.3, 0.4, 0.6)
    
43.     ctx.fill_preserve()
    
44.     ctx.set_source_rgb(0.3, 0, 0.6)
    
45.     ctx.stroke()
    
46.     # object 4
    
47.     ctx.scale(1 / 64, 1 / 64)
    
48.     AssDraw(ctx, TextOutlineDraw(Font, 'あ', 600, 300))
    
49.     ctx.set_source_rgb(0.6, 0.4, 0.1)
    
50.     ctx.fill_preserve()
    
51.     ctx.set_line_width(0.5 * 64)
    
52.     ctx.set_source_rgb(1, 0.1, 0.4)
    
53.     ctx.stroke()
    
54.     # save the result
    
55.     surface.write_to_png(abspath('p1.png'))
    
56.     PIX = surface.get_pix()
    
57.     PIX = PixBlur(PIX, 10)
    
58.     SavePix(abspath('p2.png'), PIX)
    
59.     tcas_main(TCAS_BUF, PIX, 0, 100000, 0, 0, 0)
    
60.     WriteTcasFile(TCAS_FILE, TCAS_BUF)     # write the buffer in memory to the file
    
61.     FinTcasFile(TCAS_FILE)

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milkyjing

效果截图 (点击可放大)

milkyjing

补充示例

1. from tcaxPy import *
   
2. from util.cairo import *
   
3. 
   
4. def tcaxPy_Init():
   
5.     global Font
   
6.     global _Fs
   
7.     _Fs = GetVal(val_FontSize)
   
8.     _FileName = GetVal(val_FontFileName)
   
9.     _FaceID = GetVal(val_FaceID)
   
10.     Font = InitFont(_FileName, _FaceID, _Fs * 10, GetVal(val_Spacing), GetVal(val_SpaceScale), MakeRGB(0, 0, 0), 0, False)
    
11. 
    
12. def tcaxPy_Fin():
    
13.     FinFont(Font)
    
14. 
    
15. def tcaxPy_User():
    
16.     file_name = GetVal(val_OutFile) + '.tcas'
    
17.     fx_width = GetVal(val_ResolutionX)
    
18.     fx_height = GetVal(val_ResolutionY)
    
19.     fx_fps = GetVal(val_FXFPS)
    
20.     TCAS_FILE = CreateTcasFile(file_name, fx_width, fx_height, fx_fps)
    
21.     FD = 1000 / fx_fps
    
22.     TCAS_BUF = []
    
23.     # using cairo to draw a text
    
24.     surface = ImageSurface(FORMAT_ARGB32, fx_width, fx_height)
    
25.     ctx = Context(surface)
    
26.     outline = TextOutlineDraw(Font, 'あ', 0, 0)
    
27.     ctx.scale(1 / 64, 1 / 64)
    
28.     AssDraw(ctx, outline)
    
29.     ctx.set_source_rgb(1, 0, 0)  # red
    
30.     ctx.fill()
    
31.     PIX = surface.get_pix()
    
32.     tcas_main(TCAS_BUF, PIX, 0, 10000, 100, 100, 0)
    
33.     # using tcaxLib to draw a text
    
34.     PIX = TextPix(Font, 'あ')
    
35.     PIX = PixColorRGB(PIX, MakeRGB(0, 255, 0))  # green
    
36.     tcas_main(TCAS_BUF, PIX, 0, 10000, 400, 100, 0)
    
37.     WriteTcasFile(TCAS_FILE, TCAS_BUF)     # write the buffer in memory to the file
    
38.     FinTcasFile(TCAS_FILE)
    
39.    
    
40.     # ASS alternative
    
41.     file_name = GetVal(val_OutFile) + '.ass'
    
42.     ass_header = GetVal(val_AssHeader)
    
43.     ASS_FILE = CreateAssFile(file_name, ass_header)
    
44.     ASS_BUF = []
    
45.     ass_main(ASS_BUF, SubL(0, 1000), an(7) + pos(700, 100) + fs(_Fs * 10) + bord(0) + color1('FF0000'), 'あ')    # blue
    
46.     WriteAssFile(ASS_FILE, ASS_BUF)     # write the buffer in memory to the file
    
47.     FinAssFile(ASS_FILE)

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milkyjing

效果截图 (点击可放大)

milkyjing

补充示例, 字体平滑缩放 (动态)

1. from tcaxPy import *
   
2. from util.cairo import *
   
3. 
   
4. def tcaxPy_Init():
   
5.     global Font
   
6.     global _Fs
   
7.     _Fs = GetVal(val_FontSize) * 2
   
8.     _FileName = GetVal(val_FontFileName)
   
9.     _FaceID = GetVal(val_FaceID)
   
10.     Font = InitFont(_FileName, _FaceID, _Fs, GetVal(val_Spacing), GetVal(val_SpaceScale), MakeRGB(0, 0, 0), 0, False)
    
11. 
    
12. def tcaxPy_Fin():
    
13.     FinFont(Font)
    
14. 
    
15. def tcaxPy_User():
    
16.     file_name = GetVal(val_OutFile) + '.tcas'
    
17.     fx_width = GetVal(val_ResolutionX)
    
18.     fx_height = GetVal(val_ResolutionY)
    
19.     fx_fps = GetVal(val_FXFPS)
    
20.     TCAS_FILE = CreateTcasFile(file_name, fx_width, fx_height, fx_fps)
    
21.     FD = 1000 / fx_fps
    
22.     # using cairo to scale a text
    
23.     surface = ImageSurface(FORMAT_ARGB32, fx_width, fx_height)
    
24.     ctx = Context(surface)
    
25.     outline = TextOutlineDraw(Font, 'あ', 0, 0)
    
26.     metrics = TextMetrics(Font, 'あ')
    
27.     ctx.translate(300 - metrics[4] / 2, 300 - _Fs / 2)
    
28.     fac = 1.5
    
29.     n = 200
    
30.     for i in range(n):
    
31.         TCAS_BUF = []
    
32.         ctx.translate(-_Fs * fac / 2 / n, -_Fs * fac / 2 / n)
    
33.         f = 1/ 64 * (1 + fac * i / n)
    
34.         ctx.scale(f, f)
    
35.         AssDraw(ctx, outline)
    
36.         ctx.set_source_rgb(1, 0, 0)
    
37.         ctx.fill()
    
38.         PIX = surface.get_pix()
    
39.         #PIX = PixStrip(PIX)    # need the latest tcaxLib.pyd module
    
40.         PIX = PixColorRGB(PIX, MakeRGB(255, 0, 255))
    
41.         ctx.scale(1 / f, 1 / f)
    
42.         clear_surface(ctx)
    
43.         tcas_main(TCAS_BUF, PIX, 300 + FD * i, 300 + FD * (i + 1), 0, 0, 0)
    
44.         WriteTcasFile(TCAS_FILE, TCAS_BUF)     # write the buffer in memory to the file
    
45.         progress(i + 1, n)
    
46.     FinTcasFile(TCAS_FILE)
    
47.     # ASS alternative
    
48.     file_name = GetVal(val_OutFile) + '.ass'
    
49.     ass_header = GetVal(val_AssHeader)
    
50.     ASS_FILE = CreateAssFile(file_name, ass_header)
    
51.     ASS_BUF = []
    
52.     ass_main(ASS_BUF, SubL(30, 30 + FD * n / 10), an(5) + pos(300, 300) + fs(_Fs) + t(fs(_Fs * (1 + fac))) + bord(0) + color1('FF0000'), 'あ')    # blue
    
53.     ass_main(ASS_BUF, SubL(30, 30 + FD * n / 10), an(5) + pos(500, 300) + fs(_Fs) + t(fs(_Fs * (1 + fac))) + bord(0) + color1('0000FF'), 'あ')    # red
    
54.     WriteAssFile(ASS_FILE, ASS_BUF)     # write the buffer in memory to the file
    
55.     FinAssFile(ASS_FILE)
    
56. 
    
57. 
    
58. def clear_surface(ctx):
    
59.     ctx.save()
    
60.     ctx.set_source_rgba(0, 0, 0, 0)
    
61.     ctx.set_operator(OPERATOR_SOURCE)
    
62.     ctx.paint()
    
63.     ctx.restore()

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milkyjing

补充示例, 参考模板

1. from tcaxPy import *
   
2. from util.cairo import *
   
3. 
   
4. def tcaxPy_User():
   
5.     GetHelp()   # get the description of the global variables, comment them if you don't need
   
6.     # initilization
   
7.     file_name = GetVal(val_OutFile) + '.tcas'
   
8.     fx_width = GetVal(val_ResolutionX)
   
9.     fx_height = GetVal(val_ResolutionY)
   
10.     fx_fps = GetVal(val_FXFPS)
    
11.     TCAS_FILE = CreateTcasFile(file_name, fx_width, fx_height, fx_fps)
    
12.     surface = ImageSurface(FORMAT_ARGB32, fx_width, fx_height)
    
13.     ctx = Context(surface)
    
14.     Font = InitFont(GetVal(val_FontFileName), GetVal(val_FaceID), GetVal(val_FontSize), GetVal(val_Spacing), GetVal(val_SpaceScale), HexToDec(GetVal(val_1C)), GetVal(val_Bord), False)
    
15.     # retrieve basic information
    
16.     FD         = 1000 / fx_fps
    
17.     fontSize   = GetVal(val_FontSize)
    
18.     marginX    = GetVal(val_OffsetX)
    
19.     marginY    = GetVal(val_OffsetY)
    
20.     spacing    = GetVal(val_Spacing)
    
21.     lineNum    = GetVal(val_nLines)
    
22.     textNum    = GetVal(val_nTexts)
    
23.     start      = GetVal(val_BegTime)
    
24.     end        = GetVal(val_EndTime)
    
25.     kar        = GetVal(val_KarTime)
    
26.     elapKar    = GetVal(val_KarTimeDiff)
    
27.     text       = GetVal(val_Text)
    
28.     textLength = GetVal(val_TextLength)
    
29.     width      = GetVal(val_TextWidth)
    
30.     height     = GetVal(val_TextHeight)
    
31.     advance    = GetVal(val_TextAdvance)
    
32.     advDiff    = GetVal(val_TextAdvanceDiff)
    
33.     # main loop
    
34.     for i in range(lineNum):
    
35.         initPosX = (fx_width - textLength[i]) / 2 + marginX        # if marginX = 0, then it's just on the middle
    
36.         initPosY = fx_height - fontSize - marginY
    
37.         for j in range(textNum[i]):
    
38.             if text[i][j] == '' or text[i][j] == ' ' or text[i][j] == '　':
    
39.                 continue
    
40.             posX = initPosX + advDiff[i][j] + advance[i][j] / 2
    
41.             posY = initPosY
    
42.             # draw by Cairo Toy Font API, color is pink, without border
    
43.             ctx.select_font_face(GetVal(val_FontFaceName))
    
44.             ctx.set_font_size(fontSize)
    
45.             ctx.move_to(posX, posY + fontSize + GetVal(val_Descender))
    
46.             ctx.text_path(text[i][j])
    
47.             ctx.set_source_rgb(1, 0, 1)
    
48.             ctx.fill()
    
49.             # draw by tcaxLib TextOutlineDraw API, color is red, without border
    
50.             ctx.save()
    
51.             ctx.scale(1 / 64, 1 / 64)
    
52.             outline = TextOutlineDraw(Font, text[i][j], posX, posY)
    
53.             AssDraw(ctx, outline)
    
54.             ctx.set_source_rgb(1, 0, 0)
    
55.             ctx.fill()
    
56.             ctx.restore()
    
57.             # draw by tcaxLib TextPix API, color is blue, with border = 1 (according to the setting of the TCC file)
    
58.             TCAS_BUF = []
    
59.             PIX = TextPix(Font, text[i][j])
    
60.             PIX = PixColorRGB(PIX, MakeRGB(0, 0, 0))
    
61.             tcas_main(TCAS_BUF, PIX, start[i] * 10, end[i] * 10, posX, posY, 0)
    
62.             WriteTcasFile(TCAS_FILE, TCAS_BUF)
    
63.             # you can also draw the text by ASS, through various methods, such as direct text, draw by ASS drawing commands or draw by pixels, and hopefully note that all kinds of text drawing will likely to produce the same result, cool huh :)
    
64.             # the result of this script is that lines of red texts with blue borders, let me explain, the pink texts are covered by the red one, since they comes later and on the same layer, the blue ones are written to the TCAS file earliest, but they have border! So you can see them
    
65.         TCAS_BUF = []
    
66.         PIX = surface.get_pix()
    
67.         surface_clear(ctx)
    
68.         PIX = PixStrip(PIX)
    
69.         tcas_main(TCAS_BUF, PIX, start[i] * 10, end[i] * 10, 0, 0, 0)
    
70.         WriteTcasFile(TCAS_FILE, TCAS_BUF)     # write the buffer in memory to the file
    
71.         progress(i + 1, lineNum)
    
72.     FinFont(Font)
    
73.     FinTcasFile(TCAS_FILE)

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