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linear gradients - parsing

This commit is contained in:
gazer 2017-10-12 01:44:21 +03:00
parent b0f0afda82
commit 955d241fac
1 changed files with 46 additions and 25 deletions
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71
src/dlangui/graphics/resources.d
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@ -322,13 +322,27 @@ class SolidFillDrawable : Drawable {
_color = color;
}
override void drawTo(DrawBuf buf, Rect rc, uint state = 0, int tilex0 = 0, int tiley0 = 0) {
if ((_color >> 24) != 0xFF) // not fully transparent
if (!_color.isFullyTransparentColor)
buf.fillRect(rc, _color);
}
@property override int width() { return 1; }
@property override int height() { return 1; }
}
class GradientDrawable : Drawable {
protected uint _color1;
protected uint _color2;
this(uint color1, uint color2) {
_color1 = color1;
_color2 = color2;
}
override void drawTo(DrawBuf buf, Rect rc, uint state = 0, int tilex0 = 0, int tiley0 = 0) {
buf.fillRect(rc, _color1); // stub
}
@property override int width() { return 1; }
@property override int height() { return 1; }
}
/// solid borders (may be of different width) and, optionally, solid inner area
class FrameDrawable : Drawable {
protected uint _frameColor; // frame color
@ -423,39 +437,46 @@ static if (BACKEND_CONSOLE) {
/// decode solid color / gradient / frame drawable from string like #AARRGGBB, e.g. #5599AA
///
/// SolidFillDrawable: #AARRGGBB - e.g. #8090A0 or #80ffffff
/// GradientDrawable: #linear,#firstColor,#secondColor
/// FrameDrawable: #frameColor,frameWidth[,#middleColor]
/// or #frameColor,leftBorderWidth,topBorderWidth,rightBorderWidth,bottomBorderWidth[,#middleColor]
/// e.g. #000000,2,#C0FFFFFF - black frame of width 2 with 75% transparent white middle
/// e.g. #0000FF,2,3,4,5,#FFFFFF - blue frame with left,top,right,bottom borders of width 2,3,4,5 and white inner area
static Drawable createColorDrawable(string s) {
Log.d("creating color drawable ", s);
uint[6] values;
int valueCount = 0;
int start = 0;
for (int i = 0; i <= s.length; i++) {
if (i == s.length || s[i] == ',') {
if (i > start) {
string item = s[start .. i];
if (item.startsWith("#"))
values[valueCount++] = decodeHexColor(item);
else
values[valueCount++] = decodeDimension(item);
if (valueCount >= 6)
break;
}
start = i + 1;
enum DrawableType { SolidColor, LinearGradient, Frame }
auto type = DrawableType.SolidColor;
string[] items = s.split(',');
uint[] values;
foreach (i, item; items) {
if (item == "#linear")
type = DrawableType.LinearGradient;
else if (item.startsWith("#"))
values ~= decodeHexColor(item);
else {
values ~= decodeDimension(item);
type = DrawableType.Frame;
}
if (i >= 6)
break;
}
if (valueCount == 1) // only color #AARRGGBB
if (type == DrawableType.SolidColor && values.length == 1) // only color #AARRGGBB
return new SolidFillDrawable(values[0]);
else if (valueCount == 2) // frame color and frame width, with transparent inner area - #AARRGGBB,NN
return new FrameDrawable(values[0], values[1]);
else if (valueCount == 3) // frame color, frame width, inner area color - #AARRGGBB,NN,#AARRGGBB
return new FrameDrawable(values[0], values[1], values[2]);
else if (valueCount == 5) // frame color, frame widths for left,top,right,bottom and transparent inner area - #AARRGGBB,NNleft,NNtop,NNright,NNbottom
return new FrameDrawable(values[0], Rect(values[1], values[2], values[3], values[4]));
else if (valueCount == 6) // frame color, frame widths for left,top,right,bottom, inner area color - #AARRGGBB,NNleft,NNtop,NNright,NNbottom,#AARRGGBB
return new FrameDrawable(values[0], Rect(values[1], values[2], values[3], values[4]), values[5]);
else if (type == DrawableType.LinearGradient && values.length == 2) // two gradient colors
return new GradientDrawable(values[0], values[1]);
else if (type == DrawableType.Frame) {
if (values.length == 2) // frame color and frame width, with transparent inner area - #AARRGGBB,NN
return new FrameDrawable(values[0], values[1]);
else if (values.length == 3) // frame color, frame width, inner area color - #AARRGGBB,NN,#AARRGGBB
return new FrameDrawable(values[0], values[1], values[2]);
else if (values.length == 5) // frame color, frame widths for left,top,right,bottom and transparent inner area - #AARRGGBB,NNleft,NNtop,NNright,NNbottom
return new FrameDrawable(values[0], Rect(values[1], values[2], values[3], values[4]));
else if (values.length == 6) // frame color, frame widths for left,top,right,bottom, inner area color - #AARRGGBB,NNleft,NNtop,NNright,NNbottom,#AARRGGBB
return new FrameDrawable(values[0], Rect(values[1], values[2], values[3], values[4]), values[5]);
}
Log.e("Invalid drawable string format: ", s);
return new EmptyDrawable(); // invalid format - just return empty drawable
}