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authorAlessandro Ghedini <al3xbio@gmail.com>2011-11-20 15:50:38 +0100
committerAlessandro Ghedini <al3xbio@gmail.com>2011-11-20 15:51:50 +0100
commit3997b71e281a5f43cc8c1892e85de30728df7b2d (patch)
tree96f2be7c48af03b7c540eba9dd6680eb270f23b8 /src/renderers/sliceRenderer.vala
parent902829c62f552f35517783570025b479745de3c5 (diff)
Imported Upstream version 0.3.1
Diffstat (limited to 'src/renderers/sliceRenderer.vala')
-rw-r--r--src/renderers/sliceRenderer.vala89
1 files changed, 83 insertions, 6 deletions
diff --git a/src/renderers/sliceRenderer.vala b/src/renderers/sliceRenderer.vala
index 08c880f..61c50b1 100644
--- a/src/renderers/sliceRenderer.vala
+++ b/src/renderers/sliceRenderer.vala
@@ -19,28 +19,77 @@ using GLib.Math;
namespace GnomePie {
-// Renders a Slice of a Pie. According to the current theme.
+/////////////////////////////////////////////////////////////////////////
+/// Renders a Slice of a Pie. According to the current theme.
+/////////////////////////////////////////////////////////////////////////
public class SliceRenderer : GLib.Object {
+ /////////////////////////////////////////////////////////////////////
+ /// Whether this slice is active (hovered) or not.
+ /////////////////////////////////////////////////////////////////////
+
public bool active {get; private set; default = false;}
+
+ /////////////////////////////////////////////////////////////////////
+ /// The Image which should be displayed as center caption when this
+ /// slice is active.
+ /////////////////////////////////////////////////////////////////////
+
public Image caption {get; private set;}
+
+ /////////////////////////////////////////////////////////////////////
+ /// The color which should be used for colorizing center layers when
+ /// this slice is active.
+ /////////////////////////////////////////////////////////////////////
+
public Color color {get; private set;}
+ /////////////////////////////////////////////////////////////////////
+ /// The two Images used, when this slice is active or not.
+ /////////////////////////////////////////////////////////////////////
+
private Image active_icon;
private Image inactive_icon;
+
+ /////////////////////////////////////////////////////////////////////
+ /// The Image displaying the associated hot key of this slice.
+ /////////////////////////////////////////////////////////////////////
+
private Image hotkey;
+ /////////////////////////////////////////////////////////////////////
+ /// The Action which is rendered by this SliceRenderer.
+ /////////////////////////////////////////////////////////////////////
+
private Action action;
+
+ /////////////////////////////////////////////////////////////////////
+ /// The PieRenderer which owns this SliceRenderer.
+ /////////////////////////////////////////////////////////////////////
private unowned PieRenderer parent;
+
+ /////////////////////////////////////////////////////////////////////
+ /// The index of this slice in a pie. Clockwise assigned, starting
+ /// from the right-most slice.
+ /////////////////////////////////////////////////////////////////////
+
private int position;
- private AnimatedValue fade;
- private AnimatedValue scale;
- private AnimatedValue alpha;
- private AnimatedValue fade_rotation;
- private AnimatedValue fade_scale;
+ /////////////////////////////////////////////////////////////////////
+ /// AnimatedValues needed for a slice.
+ /////////////////////////////////////////////////////////////////////
+
+ private AnimatedValue fade; // for transitions from active to inactive
+ private AnimatedValue scale; // for zoom effect
+ private AnimatedValue alpha; // for fading in/out
+ private AnimatedValue fade_rotation; // for fading in/out
+ private AnimatedValue fade_scale; // for fading in/out
+
+ /////////////////////////////////////////////////////////////////////
+ /// C'tor, initializes all AnimatedValues.
+ /////////////////////////////////////////////////////////////////////
public SliceRenderer(PieRenderer parent) {
this.parent = parent;
@@ -60,6 +109,10 @@ public class SliceRenderer : GLib.Object {
Config.global.theme.fade_in_rotation, 0.0,
Config.global.theme.fade_in_time);
}
+
+ /////////////////////////////////////////////////////////////////////
+ /// Loads an Action. All members are initialized accordingly.
+ /////////////////////////////////////////////////////////////////////
public void load(Action action, int position) {
this.position = position;
@@ -88,10 +141,19 @@ public class SliceRenderer : GLib.Object {
(int)Config.global.theme.slice_radius*2, "sans 20");
}
+ /////////////////////////////////////////////////////////////////////
+ /// Activaes the Action of this slice.
+ /////////////////////////////////////////////////////////////////////
+
public void activate() {
action.activate();
}
+ /////////////////////////////////////////////////////////////////////
+ /// Initiates the fade-out animation by resetting the targets of the
+ /// AnimatedValues to 0.0.
+ /////////////////////////////////////////////////////////////////////
+
public void fade_out() {
this.alpha.reset_target(0.0, Config.global.theme.fade_out_time);
this.fade_scale = new AnimatedValue.cubic(AnimatedValue.Direction.IN,
@@ -105,6 +167,11 @@ public class SliceRenderer : GLib.Object {
Config.global.theme.fade_out_time);
}
+ /////////////////////////////////////////////////////////////////////
+ /// Should be called if the active slice of the PieRenderer changes.
+ /// The members activity, caption and color are set accordingly.
+ /////////////////////////////////////////////////////////////////////
+
public void set_active_slice(SliceRenderer? active_slice) {
if (active_slice == this) {
this.fade.reset_target(1.0, Config.global.theme.transition_time);
@@ -112,6 +179,10 @@ public class SliceRenderer : GLib.Object {
this.fade.reset_target(0.0, Config.global.theme.transition_time);
}
}
+
+ /////////////////////////////////////////////////////////////////////
+ /// Draws all layers of the slice.
+ /////////////////////////////////////////////////////////////////////
public void draw(double frame_time, Cairo.Context ctx, double angle, double distance) {
@@ -134,6 +205,7 @@ public class SliceRenderer : GLib.Object {
if (fabs(this.scale.end - max_scale) > Config.global.theme.max_zoom*0.005)
this.scale.reset_target(max_scale, Config.global.theme.transition_time);
+ // update the AnimatedValues
this.scale.update(frame_time);
this.alpha.update(frame_time);
this.fade.update(frame_time);
@@ -142,14 +214,17 @@ public class SliceRenderer : GLib.Object {
ctx.save();
+ // distance from the center
double radius = Config.global.theme.radius;
+ // increase radius if there are many slices in a pie
if (atan((Config.global.theme.slice_radius+Config.global.theme.slice_gap)
/(radius/Config.global.theme.max_zoom)) > PI/parent.slice_count()) {
radius = (Config.global.theme.slice_radius+Config.global.theme.slice_gap)
/tan(PI/parent.slice_count())*Config.global.theme.max_zoom;
}
+ // transform the context
ctx.scale(scale.val*fade_scale.val, scale.val*fade_scale.val);
ctx.translate(cos(direction)*radius, sin(direction)*radius);
@@ -157,6 +232,7 @@ public class SliceRenderer : GLib.Object {
ctx.set_operator(Cairo.Operator.ADD);
+ // paint the images
if (fade.val > 0.0) active_icon.paint_on(ctx, this.alpha.val*this.fade.val);
if (fade.val < 1.0) inactive_icon.paint_on(ctx, this.alpha.val*(1.0 - fade.val));
@@ -172,6 +248,7 @@ public class SliceRenderer : GLib.Object {
ctx.pop_group_to_source();
ctx.paint();
+ // draw hotkeys if necassary
if (this.parent.show_hotkeys)
this.hotkey.paint_on(ctx, 1.0);