36
37 /**
38 * A delegate pipe of SG2D for drawing text.
39 */
40
41 public abstract class GlyphListPipe implements TextPipe {
42
43 public void drawString(SunGraphics2D sg2d, String s,
44 double x, double y)
45 {
46 FontInfo info = sg2d.getFontInfo();
47 if (info.pixelHeight > OutlineTextRenderer.THRESHHOLD) {
48 SurfaceData.outlineTextRenderer.drawString(sg2d, s, x, y);
49 return;
50 }
51
52 float devx, devy;
53 if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {
54 double origin[] = {x + info.originX, y + info.originY};
55 sg2d.transform.transform(origin, 0, origin, 0, 1);
56 devx = (float)origin[0];
57 devy = (float)origin[1];
58 } else {
59 devx = (float)(x + info.originX + sg2d.transX);
60 devy = (float)(y + info.originY + sg2d.transY);
61 }
62 /* setFromString returns false if shaping is needed, and we then back
63 * off to a TextLayout. Such text may benefit slightly from a lower
64 * overhead in this approach over the approach in previous releases.
65 */
66 GlyphList gl = GlyphList.getInstance();
67 if (gl.setFromString(info, s, devx, devy)) {
68 drawGlyphList(sg2d, gl);
69 gl.dispose();
70 } else {
71 gl.dispose(); // release this asap.
72 TextLayout tl = new TextLayout(s, sg2d.getFont(),
73 sg2d.getFontRenderContext());
74 tl.draw(sg2d, (float)x, (float)y);
75 }
76 }
77
78 public void drawChars(SunGraphics2D sg2d,
79 char data[], int offset, int length,
80 int ix, int iy)
81 {
82 FontInfo info = sg2d.getFontInfo();
83 float x, y;
84 if (info.pixelHeight > OutlineTextRenderer.THRESHHOLD) {
85 SurfaceData.outlineTextRenderer.drawChars(
86 sg2d, data, offset, length, ix, iy);
87 return;
88 }
89 if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {
90 double origin[] = {ix + info.originX, iy + info.originY};
91 sg2d.transform.transform(origin, 0, origin, 0, 1);
92 x = (float) origin[0];
93 y = (float) origin[1];
94 } else {
95 x = ix + info.originX + sg2d.transX;
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36
37 /**
38 * A delegate pipe of SG2D for drawing text.
39 */
40
41 public abstract class GlyphListPipe implements TextPipe {
42
43 public void drawString(SunGraphics2D sg2d, String s,
44 double x, double y)
45 {
46 FontInfo info = sg2d.getFontInfo();
47 if (info.pixelHeight > OutlineTextRenderer.THRESHHOLD) {
48 SurfaceData.outlineTextRenderer.drawString(sg2d, s, x, y);
49 return;
50 }
51
52 float devx, devy;
53 if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {
54 double origin[] = {x + info.originX, y + info.originY};
55 sg2d.transform.transform(origin, 0, origin, 0, 1);
56 devx = (float) closeToHalfInteger(origin[0]);
57 devy = (float) closeToHalfInteger(origin[1]);
58 } else {
59 devx = (float)(x + info.originX + sg2d.transX);
60 devy = (float)(y + info.originY + sg2d.transY);
61 }
62 /* setFromString returns false if shaping is needed, and we then back
63 * off to a TextLayout. Such text may benefit slightly from a lower
64 * overhead in this approach over the approach in previous releases.
65 */
66 GlyphList gl = GlyphList.getInstance();
67 if (gl.setFromString(info, s, devx, devy)) {
68 drawGlyphList(sg2d, gl);
69 gl.dispose();
70 } else {
71 gl.dispose(); // release this asap.
72 TextLayout tl = new TextLayout(s, sg2d.getFont(),
73 sg2d.getFontRenderContext());
74 tl.draw(sg2d, (float)x, (float)y);
75 }
76 }
77
78 private static final double MAX_TX_ERROR = .0001;
79
80 private static double closeToHalfInteger(double value) {
81 double d = value + 0.5;
82 int i = (int) Math.floor(d + 0.5);
83 if (Math.abs(d - i) < MAX_TX_ERROR) {
84 return i - 0.5;
85 }
86 return value;
87 }
88
89 public void drawChars(SunGraphics2D sg2d,
90 char data[], int offset, int length,
91 int ix, int iy)
92 {
93 FontInfo info = sg2d.getFontInfo();
94 float x, y;
95 if (info.pixelHeight > OutlineTextRenderer.THRESHHOLD) {
96 SurfaceData.outlineTextRenderer.drawChars(
97 sg2d, data, offset, length, ix, iy);
98 return;
99 }
100 if (sg2d.transformState >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {
101 double origin[] = {ix + info.originX, iy + info.originY};
102 sg2d.transform.transform(origin, 0, origin, 0, 1);
103 x = (float) origin[0];
104 y = (float) origin[1];
105 } else {
106 x = ix + info.originX + sg2d.transX;
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