diff options
Diffstat (limited to 'src/renderers/centerRenderer.vala')
| -rw-r--r-- | src/renderers/centerRenderer.vala | 55 |
1 files changed, 51 insertions, 4 deletions
diff --git a/src/renderers/centerRenderer.vala b/src/renderers/centerRenderer.vala index c30e9ce..fab633e 100644 --- a/src/renderers/centerRenderer.vala +++ b/src/renderers/centerRenderer.vala @@ -19,17 +19,44 @@ using GLib.Math; namespace GnomePie { -// Renders the center of a Pie. +///////////////////////////////////////////////////////////////////////// +/// Renders the center of a Pie. +///////////////////////////////////////////////////////////////////////// public class CenterRenderer : GLib.Object { + ///////////////////////////////////////////////////////////////////// + /// The PieRenderer which owns this CenterRenderer. + ///////////////////////////////////////////////////////////////////// + private unowned PieRenderer parent; + + ///////////////////////////////////////////////////////////////////// + /// The caption drawn in the center. Changes when the active slice + /// changes. + ///////////////////////////////////////////////////////////////////// + private unowned Image? caption; + + ///////////////////////////////////////////////////////////////////// + /// The color of the currently active slice. Used to colorize layers. + ///////////////////////////////////////////////////////////////////// + private Color color; + ///////////////////////////////////////////////////////////////////// + /// Two AnimatedValues: alpha is for global transparency (when + /// fading in/out), activity is 1.0 if there is an active slice and + /// 0.0 if there is no active slice. + ///////////////////////////////////////////////////////////////////// + private AnimatedValue activity; private AnimatedValue alpha; + ///////////////////////////////////////////////////////////////////// + /// C'tor, initializes all members. + ///////////////////////////////////////////////////////////////////// + public CenterRenderer(PieRenderer parent) { this.parent = parent; this.activity = new AnimatedValue.linear(0.0, 0.0, Config.global.theme.transition_time); @@ -38,11 +65,21 @@ public class CenterRenderer : GLib.Object { this.caption = null; } + ///////////////////////////////////////////////////////////////////// + /// Initiates the fade-out animation by resetting the targets of the + /// AnimatedValues to 0.0. + ///////////////////////////////////////////////////////////////////// + public void fade_out() { this.activity.reset_target(0.0, Config.global.theme.fade_out_time); this.alpha.reset_target(0.0, 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 == null) { this.activity.reset_target(0.0, Config.global.theme.transition_time); @@ -53,17 +90,23 @@ public class CenterRenderer : GLib.Object { } } + ///////////////////////////////////////////////////////////////////// + /// Draws all center layers and the caption. + ///////////////////////////////////////////////////////////////////// + public void draw(double frame_time, Cairo.Context ctx, double angle, double distance) { - + // get all center_layers var layers = Config.global.theme.center_layers; + // update the AnimatedValues this.activity.update(frame_time); this.alpha.update(frame_time); + // draw each layer foreach (var layer in layers) { - ctx.save(); + // calculate all values needed for animation/drawing double active_speed = (layer.active_rotation_mode == CenterLayer.RotationMode.TO_MOUSE) ? 0.0 : layer.active_rotation_speed; double inactive_speed = (layer.inactive_rotation_mode == CenterLayer.RotationMode.TO_MOUSE) ? @@ -114,10 +157,14 @@ public class CenterRenderer : GLib.Object { if (colorize > 0.0) ctx.push_group(); + // transform the context ctx.rotate(layer.rotation); ctx.scale(max_scale, max_scale); + + // paint the layer layer.image.paint_on(ctx, this.alpha.val*max_alpha); + // colorize it, if necessary if (colorize > 0.0) { ctx.set_operator(Cairo.Operator.ATOP); ctx.set_source_rgb(this.color.r, this.color.g, this.color.b); @@ -135,7 +182,7 @@ public class CenterRenderer : GLib.Object { if (Config.global.theme.caption && caption != null && this.activity.val > 0) { ctx.save(); ctx.identity_matrix(); - int pos = this.parent.get_size()/2; + int pos = this.parent.size/2; ctx.translate(pos, (int)(Config.global.theme.caption_position) + pos); caption.paint_on(ctx, this.activity.val*this.alpha.val); ctx.restore(); |