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// pathfinder/demo/src/ui.rs
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//
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// Copyright © 2019 The Pathfinder Project Developers.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use crate::Options;
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use nfd::Response;
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use pathfinder_geometry::basic::point::Point2DI32;
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use pathfinder_geometry::basic::rect::RectI32;
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use pathfinder_gl::debug::{DebugUI, PADDING, TEXT_COLOR, WINDOW_COLOR};
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use pathfinder_gl::device::{Device, Texture};
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use pathfinder_renderer::paint::ColorU;
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use std::f32::consts::PI;
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use std::path::PathBuf;
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const ICON_SIZE: i32 = 48;
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const BUTTON_WIDTH: i32 = PADDING * 2 + ICON_SIZE;
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const BUTTON_HEIGHT: i32 = PADDING * 2 + ICON_SIZE;
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const BUTTON_TEXT_OFFSET: i32 = PADDING + 36;
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const SWITCH_SIZE: i32 = SWITCH_HALF_SIZE * 2 + 1;
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const SWITCH_HALF_SIZE: i32 = 96;
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const SLIDER_WIDTH: i32 = 360;
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const SLIDER_HEIGHT: i32 = 48;
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const SLIDER_TRACK_HEIGHT: i32 = 24;
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const SLIDER_KNOB_WIDTH: i32 = 12;
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const SLIDER_KNOB_HEIGHT: i32 = 48;
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const EFFECTS_PANEL_WIDTH: i32 = 550;
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const EFFECTS_PANEL_HEIGHT: i32 = BUTTON_HEIGHT * 3 + PADDING * 4;
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const OPEN_BUTTON_X: i32 = PADDING + (BUTTON_WIDTH + PADDING) * 1;
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const SCREENSHOT_BUTTON_X: i32 = PADDING + (BUTTON_WIDTH + PADDING) * 2;
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const THREE_D_SWITCH_X: i32 = PADDING + (BUTTON_WIDTH + PADDING) * 3;
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const BACKGROUND_SWITCH_X: i32 = PADDING + (BUTTON_WIDTH + PADDING) * 3 + PADDING + SWITCH_SIZE;
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const ROTATE_PANEL_X: i32 = PADDING + (BUTTON_WIDTH + PADDING) * 3 + (PADDING + SWITCH_SIZE) * 2;
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const ROTATE_PANEL_WIDTH: i32 = SLIDER_WIDTH + PADDING * 2;
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const ROTATE_PANEL_HEIGHT: i32 = PADDING * 2 + SLIDER_HEIGHT;
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static BUTTON_ICON_COLOR: ColorU = ColorU { r: 255, g: 255, b: 255, a: 255 };
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static OUTLINE_COLOR: ColorU = ColorU { r: 255, g: 255, b: 255, a: 192 };
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static EFFECTS_PNG_NAME: &'static str = "demo-effects";
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static OPEN_PNG_NAME: &'static str = "demo-open";
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static ROTATE_PNG_NAME: &'static str = "demo-rotate";
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static ZOOM_IN_PNG_NAME: &'static str = "demo-zoom-in";
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static ZOOM_OUT_PNG_NAME: &'static str = "demo-zoom-out";
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static BG_LIGHT_PNG_NAME: &'static str = "demo-bg-light";
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static BG_DARK_PNG_NAME: &'static str = "demo-bg-dark";
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static SCREENSHOT_PNG_NAME: &'static str = "demo-screenshot";
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pub struct DemoUI {
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effects_texture: Texture,
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open_texture: Texture,
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rotate_texture: Texture,
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zoom_in_texture: Texture,
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zoom_out_texture: Texture,
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bg_light_texture: Texture,
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bg_dark_texture: Texture,
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screenshot_texture: Texture,
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effects_panel_visible: bool,
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rotate_panel_visible: bool,
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pub three_d_enabled: bool,
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pub dark_background_enabled: bool,
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pub gamma_correction_effect_enabled: bool,
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pub stem_darkening_effect_enabled: bool,
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pub subpixel_aa_effect_enabled: bool,
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pub rotation: i32,
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}
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impl DemoUI {
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pub fn new(device: &Device, options: Options) -> DemoUI {
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let effects_texture = device.create_texture_from_png(EFFECTS_PNG_NAME);
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let open_texture = device.create_texture_from_png(OPEN_PNG_NAME);
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let rotate_texture = device.create_texture_from_png(ROTATE_PNG_NAME);
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let zoom_in_texture = device.create_texture_from_png(ZOOM_IN_PNG_NAME);
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let zoom_out_texture = device.create_texture_from_png(ZOOM_OUT_PNG_NAME);
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let bg_light_texture = device.create_texture_from_png(BG_LIGHT_PNG_NAME);
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let bg_dark_texture = device.create_texture_from_png(BG_DARK_PNG_NAME);
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let screenshot_texture = device.create_texture_from_png(SCREENSHOT_PNG_NAME);
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DemoUI {
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effects_texture,
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open_texture,
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rotate_texture,
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zoom_in_texture,
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zoom_out_texture,
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bg_light_texture,
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bg_dark_texture,
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screenshot_texture,
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effects_panel_visible: false,
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rotate_panel_visible: false,
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three_d_enabled: options.three_d,
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dark_background_enabled: true,
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gamma_correction_effect_enabled: false,
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stem_darkening_effect_enabled: false,
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subpixel_aa_effect_enabled: false,
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rotation: SLIDER_WIDTH / 2,
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}
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}
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fn rotation(&self) -> f32 {
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(self.rotation as f32 / SLIDER_WIDTH as f32 * 2.0 - 1.0) * PI
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}
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pub fn update(&mut self, debug_ui: &mut DebugUI, event: &mut UIEvent, action: &mut UIAction) {
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let bottom = debug_ui.framebuffer_size().y() - PADDING;
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// Draw effects button.
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let effects_button_position = Point2DI32::new(PADDING, bottom - BUTTON_HEIGHT);
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if self.draw_button(debug_ui, event, effects_button_position, &self.effects_texture) {
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self.effects_panel_visible = !self.effects_panel_visible;
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}
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// Draw open button.
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let lower_button_y = bottom - BUTTON_HEIGHT;
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let open_button_position = Point2DI32::new(OPEN_BUTTON_X, lower_button_y);
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if self.draw_button(debug_ui, event, open_button_position, &self.open_texture) {
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if let Ok(Response::Okay(file)) = nfd::open_file_dialog(Some("svg"), None) {
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*action = UIAction::OpenFile(PathBuf::from(file));
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}
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}
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// Draw screenshot button.
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let screenshot_button_position = Point2DI32::new(SCREENSHOT_BUTTON_X, lower_button_y);
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if self.draw_button(debug_ui,
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event,
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screenshot_button_position,
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&self.screenshot_texture) {
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if let Ok(Response::Okay(file)) = nfd::open_save_dialog(Some("png"), None) {
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*action = UIAction::TakeScreenshot(PathBuf::from(file));
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}
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}
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// Draw 3D switch.
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let three_d_switch_origin = Point2DI32::new(THREE_D_SWITCH_X, lower_button_y);
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self.three_d_enabled = self.draw_text_switch(debug_ui,
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event,
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three_d_switch_origin,
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"2D",
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"3D",
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self.three_d_enabled);
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// Draw background switch.
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let background_switch_origin = Point2DI32::new(BACKGROUND_SWITCH_X, lower_button_y);
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self.dark_background_enabled = self.draw_image_switch(debug_ui,
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event,
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background_switch_origin,
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&self.bg_light_texture,
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&self.bg_dark_texture,
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self.dark_background_enabled);
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// Draw rotate and zoom buttons, if applicable.
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if !self.three_d_enabled {
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let rotate_button_y = bottom - BUTTON_HEIGHT;
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let rotate_button_position = Point2DI32::new(ROTATE_PANEL_X, rotate_button_y);
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if self.draw_button(debug_ui, event, rotate_button_position, &self.rotate_texture) {
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self.rotate_panel_visible = !self.rotate_panel_visible;
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}
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let zoom_in_button_x = ROTATE_PANEL_X + BUTTON_WIDTH + PADDING;
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let zoom_in_button_position = Point2DI32::new(zoom_in_button_x, rotate_button_y);
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if self.draw_button(debug_ui, event, zoom_in_button_position, &self.zoom_in_texture) {
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*action = UIAction::ZoomIn;
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}
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let zoom_out_button_x = ROTATE_PANEL_X + (BUTTON_WIDTH + PADDING) * 2;
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let zoom_out_button_position = Point2DI32::new(zoom_out_button_x, rotate_button_y);
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if self.draw_button(debug_ui,
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event,
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zoom_out_button_position,
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&self.zoom_out_texture) {
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*action = UIAction::ZoomOut;
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}
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}
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// Draw effects panel, if necessary.
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self.draw_effects_panel(debug_ui, event);
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// Draw rotate panel, if necessary.
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self.draw_rotate_panel(debug_ui, event, action);
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}
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fn draw_effects_panel(&mut self, debug_ui: &mut DebugUI, event: &mut UIEvent) {
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if !self.effects_panel_visible {
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return;
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}
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let bottom = debug_ui.framebuffer_size().y() - PADDING;
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let effects_panel_y = bottom - (BUTTON_HEIGHT + PADDING + EFFECTS_PANEL_HEIGHT);
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debug_ui.draw_solid_rounded_rect(RectI32::new(Point2DI32::new(PADDING, effects_panel_y),
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Point2DI32::new(EFFECTS_PANEL_WIDTH,
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EFFECTS_PANEL_HEIGHT)),
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WINDOW_COLOR);
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self.gamma_correction_effect_enabled =
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self.draw_effects_switch(debug_ui,
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event,
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"Gamma Correction",
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0,
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effects_panel_y,
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self.gamma_correction_effect_enabled);
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self.stem_darkening_effect_enabled =
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self.draw_effects_switch(debug_ui,
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event,
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"Stem Darkening",
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1,
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effects_panel_y,
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self.stem_darkening_effect_enabled);
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self.subpixel_aa_effect_enabled =
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self.draw_effects_switch(debug_ui,
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event,
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"Subpixel AA",
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2,
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effects_panel_y,
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self.subpixel_aa_effect_enabled);
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}
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fn draw_rotate_panel(&mut self,
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debug_ui: &mut DebugUI,
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event: &mut UIEvent,
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action: &mut UIAction) {
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if !self.rotate_panel_visible {
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return;
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}
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let bottom = debug_ui.framebuffer_size().y() - PADDING;
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let rotate_panel_y = bottom - (BUTTON_HEIGHT + PADDING + ROTATE_PANEL_HEIGHT);
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let rotate_panel_origin = Point2DI32::new(ROTATE_PANEL_X, rotate_panel_y);
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let rotate_panel_size = Point2DI32::new(ROTATE_PANEL_WIDTH, ROTATE_PANEL_HEIGHT);
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debug_ui.draw_solid_rounded_rect(RectI32::new(rotate_panel_origin, rotate_panel_size),
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WINDOW_COLOR);
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let (widget_x, widget_y) = (ROTATE_PANEL_X + PADDING, rotate_panel_y + PADDING);
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let widget_rect = RectI32::new(Point2DI32::new(widget_x, widget_y),
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Point2DI32::new(SLIDER_WIDTH, SLIDER_KNOB_HEIGHT));
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if let Some(position) = event.handle_mouse_down_or_dragged_in_rect(widget_rect) {
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self.rotation = position.x();
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*action = UIAction::Rotate(self.rotation());
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}
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let slider_track_y = rotate_panel_y + PADDING + SLIDER_KNOB_HEIGHT / 2 -
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SLIDER_TRACK_HEIGHT / 2;
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let slider_track_rect =
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RectI32::new(Point2DI32::new(widget_x, slider_track_y),
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Point2DI32::new(SLIDER_WIDTH, SLIDER_TRACK_HEIGHT));
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debug_ui.draw_rect_outline(slider_track_rect, TEXT_COLOR);
|
|
|
|
|
|
|
|
let slider_knob_x = widget_x + self.rotation - SLIDER_KNOB_WIDTH / 2;
|
|
|
|
let slider_knob_rect =
|
|
|
|
RectI32::new(Point2DI32::new(slider_knob_x, widget_y),
|
|
|
|
Point2DI32::new(SLIDER_KNOB_WIDTH, SLIDER_KNOB_HEIGHT));
|
|
|
|
debug_ui.draw_solid_rect(slider_knob_rect, TEXT_COLOR);
|
|
|
|
}
|
|
|
|
|
2019-02-08 23:58:54 -05:00
|
|
|
fn draw_button(&self,
|
|
|
|
debug_ui: &mut DebugUI,
|
|
|
|
event: &mut UIEvent,
|
|
|
|
origin: Point2DI32,
|
|
|
|
texture: &Texture)
|
|
|
|
-> bool {
|
|
|
|
let button_rect = RectI32::new(origin, Point2DI32::new(BUTTON_WIDTH, BUTTON_HEIGHT));
|
2019-02-26 16:48:35 -05:00
|
|
|
debug_ui.draw_solid_rounded_rect(button_rect, WINDOW_COLOR);
|
2019-02-26 18:24:39 -05:00
|
|
|
debug_ui.draw_rounded_rect_outline(button_rect, OUTLINE_COLOR);
|
|
|
|
debug_ui.draw_texture(origin + Point2DI32::new(PADDING, PADDING),
|
|
|
|
texture,
|
|
|
|
BUTTON_ICON_COLOR);
|
2019-02-12 15:40:24 -05:00
|
|
|
event.handle_mouse_down_in_rect(button_rect).is_some()
|
2019-02-08 23:58:54 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
fn draw_effects_switch(&self,
|
|
|
|
debug_ui: &mut DebugUI,
|
|
|
|
event: &mut UIEvent,
|
|
|
|
text: &str,
|
|
|
|
index: i32,
|
|
|
|
window_y: i32,
|
|
|
|
value: bool)
|
|
|
|
-> bool {
|
|
|
|
let text_x = PADDING * 2;
|
|
|
|
let text_y = window_y + PADDING + BUTTON_TEXT_OFFSET + (BUTTON_HEIGHT + PADDING) * index;
|
|
|
|
debug_ui.draw_text(text, Point2DI32::new(text_x, text_y), false);
|
|
|
|
|
2019-02-12 15:40:24 -05:00
|
|
|
let switch_x = PADDING + EFFECTS_PANEL_WIDTH - (SWITCH_SIZE + PADDING);
|
2019-02-08 23:58:54 -05:00
|
|
|
let switch_y = window_y + PADDING + (BUTTON_HEIGHT + PADDING) * index;
|
2019-02-22 21:21:03 -05:00
|
|
|
self.draw_text_switch(debug_ui,
|
|
|
|
event,
|
|
|
|
Point2DI32::new(switch_x, switch_y),
|
|
|
|
"Off",
|
|
|
|
"On",
|
|
|
|
value)
|
|
|
|
}
|
|
|
|
|
|
|
|
fn draw_text_switch(&self,
|
|
|
|
debug_ui: &mut DebugUI,
|
|
|
|
event: &mut UIEvent,
|
|
|
|
origin: Point2DI32,
|
|
|
|
off_text: &str,
|
|
|
|
on_text: &str,
|
|
|
|
mut value: bool)
|
|
|
|
-> bool {
|
|
|
|
value = self.draw_switch(debug_ui, event, origin, value);
|
|
|
|
|
|
|
|
let off_size = debug_ui.measure_text(off_text);
|
|
|
|
let on_size = debug_ui.measure_text(on_text);
|
|
|
|
let off_offset = SWITCH_HALF_SIZE / 2 - off_size / 2;
|
|
|
|
let on_offset = SWITCH_HALF_SIZE + SWITCH_HALF_SIZE / 2 - on_size / 2;
|
|
|
|
let text_top = BUTTON_TEXT_OFFSET;
|
|
|
|
|
|
|
|
debug_ui.draw_text(off_text, origin + Point2DI32::new(off_offset, text_top), !value);
|
|
|
|
debug_ui.draw_text(on_text, origin + Point2DI32::new(on_offset, text_top), value);
|
|
|
|
|
|
|
|
value
|
|
|
|
}
|
|
|
|
|
|
|
|
fn draw_image_switch(&self,
|
|
|
|
debug_ui: &mut DebugUI,
|
|
|
|
event: &mut UIEvent,
|
|
|
|
origin: Point2DI32,
|
|
|
|
off_texture: &Texture,
|
|
|
|
on_texture: &Texture,
|
|
|
|
mut value: bool)
|
|
|
|
-> bool {
|
|
|
|
value = self.draw_switch(debug_ui, event, origin, value);
|
|
|
|
|
|
|
|
let off_offset = SWITCH_HALF_SIZE / 2 - off_texture.size.x() / 2;
|
|
|
|
let on_offset = SWITCH_HALF_SIZE + SWITCH_HALF_SIZE / 2 - on_texture.size.x() / 2;
|
|
|
|
|
|
|
|
let off_color = if !value { WINDOW_COLOR } else { TEXT_COLOR };
|
|
|
|
let on_color = if value { WINDOW_COLOR } else { TEXT_COLOR };
|
|
|
|
|
|
|
|
debug_ui.draw_texture(origin + Point2DI32::new(off_offset, PADDING),
|
|
|
|
off_texture,
|
|
|
|
off_color);
|
|
|
|
debug_ui.draw_texture(origin + Point2DI32::new(on_offset, PADDING),
|
|
|
|
on_texture,
|
|
|
|
on_color);
|
|
|
|
|
|
|
|
value
|
2019-02-08 23:58:54 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
fn draw_switch(&self,
|
|
|
|
debug_ui: &mut DebugUI,
|
|
|
|
event: &mut UIEvent,
|
|
|
|
origin: Point2DI32,
|
|
|
|
mut value: bool)
|
|
|
|
-> bool {
|
|
|
|
let widget_rect = RectI32::new(origin, Point2DI32::new(SWITCH_SIZE, BUTTON_HEIGHT));
|
2019-02-12 15:40:24 -05:00
|
|
|
if event.handle_mouse_down_in_rect(widget_rect).is_some() {
|
2019-02-08 23:58:54 -05:00
|
|
|
value = !value;
|
|
|
|
}
|
|
|
|
|
2019-02-26 16:48:35 -05:00
|
|
|
debug_ui.draw_solid_rounded_rect(widget_rect, WINDOW_COLOR);
|
2019-02-26 18:24:39 -05:00
|
|
|
debug_ui.draw_rounded_rect_outline(widget_rect, OUTLINE_COLOR);
|
2019-02-08 23:58:54 -05:00
|
|
|
|
|
|
|
let highlight_size = Point2DI32::new(SWITCH_HALF_SIZE, BUTTON_HEIGHT);
|
|
|
|
if !value {
|
2019-02-26 16:48:35 -05:00
|
|
|
debug_ui.draw_solid_rounded_rect(RectI32::new(origin, highlight_size), TEXT_COLOR);
|
2019-02-08 23:58:54 -05:00
|
|
|
} else {
|
|
|
|
let x_offset = SWITCH_HALF_SIZE + 1;
|
2019-02-26 16:48:35 -05:00
|
|
|
debug_ui.draw_solid_rounded_rect(RectI32::new(origin + Point2DI32::new(x_offset, 0),
|
|
|
|
highlight_size),
|
|
|
|
TEXT_COLOR);
|
2019-02-08 23:58:54 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
value
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-02-13 13:32:25 -05:00
|
|
|
#[derive(Clone, Debug, PartialEq)]
|
|
|
|
pub enum UIAction {
|
|
|
|
None,
|
|
|
|
OpenFile(PathBuf),
|
2019-02-25 14:33:26 -05:00
|
|
|
TakeScreenshot(PathBuf),
|
2019-02-13 13:32:25 -05:00
|
|
|
ZoomIn,
|
|
|
|
ZoomOut,
|
2019-02-13 19:05:28 -05:00
|
|
|
Rotate(f32),
|
2019-02-13 13:32:25 -05:00
|
|
|
}
|
|
|
|
|
2019-02-08 23:58:54 -05:00
|
|
|
pub enum UIEvent {
|
|
|
|
None,
|
|
|
|
MouseDown(Point2DI32),
|
2019-02-12 17:49:24 -05:00
|
|
|
MouseDragged {
|
|
|
|
absolute_position: Point2DI32,
|
|
|
|
relative_position: Point2DI32,
|
|
|
|
}
|
2019-02-08 23:58:54 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
impl UIEvent {
|
|
|
|
pub fn is_none(&self) -> bool {
|
|
|
|
match *self { UIEvent::None => true, _ => false }
|
|
|
|
}
|
|
|
|
|
2019-02-12 15:40:24 -05:00
|
|
|
fn handle_mouse_down_in_rect(&mut self, rect: RectI32) -> Option<Point2DI32> {
|
2019-02-08 23:58:54 -05:00
|
|
|
if let UIEvent::MouseDown(point) = *self {
|
|
|
|
if rect.contains_point(point) {
|
|
|
|
*self = UIEvent::None;
|
2019-02-12 15:40:24 -05:00
|
|
|
return Some(point - rect.origin());
|
2019-02-08 23:58:54 -05:00
|
|
|
}
|
|
|
|
}
|
2019-02-12 15:40:24 -05:00
|
|
|
None
|
2019-02-08 23:58:54 -05:00
|
|
|
}
|
2019-02-12 15:49:35 -05:00
|
|
|
|
|
|
|
fn handle_mouse_down_or_dragged_in_rect(&mut self, rect: RectI32) -> Option<Point2DI32> {
|
|
|
|
match *self {
|
2019-02-12 17:49:24 -05:00
|
|
|
UIEvent::MouseDown(point) | UIEvent::MouseDragged { absolute_position: point, .. }
|
|
|
|
if rect.contains_point(point) => {
|
2019-02-12 15:49:35 -05:00
|
|
|
*self = UIEvent::None;
|
|
|
|
Some(point - rect.origin())
|
|
|
|
}
|
|
|
|
_ => None,
|
|
|
|
}
|
|
|
|
}
|
2019-02-08 23:58:54 -05:00
|
|
|
}
|