///////////////////////////////////////////////////////////////////////// // Copyright 2011-2018 Simon Schneegans // // Permission is hereby granted, free of charge, to any person obtaining // a copy of this software and associated documentation files (the // "Software"), to deal in the Software without restriction, including // without limitation the rights to use, copy, modify, merge, publish, // distribute, sublicense, and/or sell copies of the Software, and to // permit persons to whom the Software is furnished to do so, subject to // the following conditions: // // The above copyright notice and this permission notice shall be // included in all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ///////////////////////////////////////////////////////////////////////// using GLib.Math; namespace GnomePie { ///////////////////////////////////////////////////////////////////////// /// 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 Action which is rendered by this SliceRenderer. ///////////////////////////////////////////////////////////////////// public Action action; ///////////////////////////////////////////////////////////////////// /// 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 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; ///////////////////////////////////////////////////////////////////// /// 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 private AnimatedValue wobble; // for organic wobbling ///////////////////////////////////////////////////////////////////// /// C'tor, initializes all AnimatedValues. ///////////////////////////////////////////////////////////////////// public SliceRenderer(PieRenderer parent) { this.parent = parent; this.reset_anim(); } ///////////////////////////////////////////////////////////////////// /// Put all AnimatedValues in their initial values ///////////////////////////////////////////////////////////////////// public void reset_anim() { this.fade = new AnimatedValue.linear(0.0, 0.0, Config.global.theme.transition_time); this.wobble = new AnimatedValue.linear(0.0, 0.0, Config.global.theme.transition_time); this.alpha = new AnimatedValue.linear(0.0, 1.0, Config.global.theme.fade_in_time); this.scale = new AnimatedValue.cubic(AnimatedValue.Direction.OUT, 1.0/Config.global.theme.max_zoom, 1.0/Config.global.theme.max_zoom, Config.global.theme.transition_time, Config.global.theme.springiness); this.fade_scale = new AnimatedValue.cubic(AnimatedValue.Direction.OUT, Config.global.theme.fade_in_zoom, 1.0, Config.global.theme.fade_in_time, Config.global.theme.springiness); this.fade_rotation = new AnimatedValue.cubic(AnimatedValue.Direction.OUT, 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; this.action = action; if (Config.global.theme.caption) this.caption = new RenderedText(action.name, Config.global.theme.caption_width, Config.global.theme.caption_height, Config.global.theme.caption_font, Config.global.theme.caption_color, Config.global.global_scale); this.active_icon = new ThemedIcon(action.name, action.icon, true); this.inactive_icon = new ThemedIcon(action.name, action.icon, false); this.color = new Color.from_icon(this.active_icon); string hotkey_label = ""; if (position < 10) { hotkey_label = "%u".printf((position+1)%10); } else if (position < 36) { hotkey_label = "%c".printf((char)(55 + position)); } this.hotkey = new RenderedText(hotkey_label, (int)Config.global.theme.slice_radius*2, (int)Config.global.theme.slice_radius*2, "sans 20", new Color(), Config.global.global_scale); } ///////////////////////////////////////////////////////////////////// /// Activates the Action of this slice. ///////////////////////////////////////////////////////////////////// public void activate(uint32 time_stamp) { action.activate(time_stamp); } ///////////////////////////////////////////////////////////////////// /// 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, this.fade_scale.val, Config.global.theme.fade_out_zoom, Config.global.theme.fade_out_time, Config.global.theme.springiness); this.fade_rotation = new AnimatedValue.cubic(AnimatedValue.Direction.IN, this.fade_rotation.val, Config.global.theme.fade_out_rotation, 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); } else { 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, int slice_track) { // update the AnimatedValues this.scale.update(frame_time); this.alpha.update(frame_time); this.fade.update(frame_time); this.fade_scale.update(frame_time); this.fade_rotation.update(frame_time); this.wobble.update(frame_time); double direction = 2.0 * PI * (position-parent.first_slice_idx)/parent.total_slice_count + parent.first_slice_angle + this.fade_rotation.val; double max_scale = 1.0/Config.global.theme.max_zoom; double diff = fabs(angle-direction); if (diff > 2 * PI) { diff = diff - 2 * PI; } if (diff > PI) { diff = 2 * PI - diff; } active = ((parent.active_slice >= 0) && (diff < PI/parent.total_slice_count)); if (slice_track != 0) { double wobble = Config.global.theme.wobble*diff/PI*(1-diff/PI); if ((direction < angle && direction > angle - PI) || direction > PI+angle) { this.wobble.reset_target(-wobble, Config.global.theme.transition_time*0.5); } else { this.wobble.reset_target(wobble, Config.global.theme.transition_time*0.5); } } else { this.wobble.reset_target(0, Config.global.theme.transition_time*0.5); } direction += this.wobble.val; if (diff < 2 * PI * Config.global.theme.zoom_range) max_scale = (Config.global.theme.max_zoom/(diff * (Config.global.theme.max_zoom - 1) /(2 * PI * Config.global.theme.zoom_range) + 1)) /Config.global.theme.max_zoom; max_scale = (slice_track != 0 ? max_scale : 1.0/Config.global.theme.max_zoom); 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); 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.total_slice_count) { radius = (Config.global.theme.slice_radius+Config.global.theme.slice_gap) /tan(PI/parent.total_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); ctx.push_group(); 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)); if (this.parent.show_hotkeys) { ctx.set_operator(Cairo.Operator.ATOP); ctx.set_source_rgba(0, 0, 0, 0.5); ctx.paint(); } ctx.set_operator(Cairo.Operator.OVER); ctx.pop_group_to_source(); ctx.paint(); // draw hotkeys if necassary if (this.parent.show_hotkeys) { this.hotkey.paint_on(ctx, 1.0); } ctx.restore(); } } }