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class="kw">use</span> <span class="ident">std::collections::HashSet</span>; <span class="kw">use</span> <span class="ident">serde</span>::{<span class="ident">Deserialize</span>, <span class="ident">Serialize</span>}; <span class="kw">use</span> <span class="ident">geom</span>::{<span class="ident">Bounds</span>, <span class="ident">Pt2D</span>}; <span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">Key</span>, <span class="ident">ScreenDims</span>, <span class="ident">ScreenPt</span>, <span class="ident">ScreenRectangle</span>, <span class="ident">UpdateType</span>, <span class="ident">UserInput</span>}; <span class="comment">// Click and release counts as a normal click, not a drag, if the distance between click and</span> <span class="comment">// release is less than this.</span> <span class="kw">const</span> <span class="ident">DRAG_THRESHOLD</span>: <span class="ident">f64</span> <span class="op">=</span> <span class="number">5.0</span>; <span class="kw">const</span> <span class="ident">PAN_SPEED</span>: <span class="ident">f64</span> <span class="op">=</span> <span class="number">15.0</span>; <span class="kw">const</span> <span class="ident">PANNING_THRESHOLD</span>: <span class="ident">f64</span> <span class="op">=</span> <span class="number">25.0</span>; <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Canvas</span> { <span class="comment">// All of these f64's are in screen-space, so do NOT use Pt2D.</span> <span class="comment">// Public for saving/loading... should probably do better</span> <span class="kw">pub</span> <span class="ident">cam_x</span>: <span class="ident">f64</span>, <span class="kw">pub</span> <span class="ident">cam_y</span>: <span class="ident">f64</span>, <span class="kw">pub</span> <span class="ident">cam_zoom</span>: <span class="ident">f64</span>, <span class="comment">// TODO Should this become Option<ScreenPt>?</span> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">cursor</span>: <span class="ident">ScreenPt</span>, <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">window_has_cursor</span>: <span class="ident">bool</span>, <span class="comment">// Only for drags starting on the map. Only used to pan the map. (Last event, original)</span> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">drag_canvas_from</span>: <span class="prelude-ty">Option</span><span class="op"><</span>(<span class="ident">ScreenPt</span>, <span class="ident">ScreenPt</span>)<span class="op">></span>, <span class="ident">drag_just_ended</span>: <span class="ident">bool</span>, <span class="kw">pub</span> <span class="ident">window_width</span>: <span class="ident">f64</span>, <span class="kw">pub</span> <span class="ident">window_height</span>: <span class="ident">f64</span>, <span class="comment">// TODO Proper API for setting these</span> <span class="kw">pub</span> <span class="ident">map_dims</span>: (<span class="ident">f64</span>, <span class="ident">f64</span>), <span class="kw">pub</span> <span class="ident">settings</span>: <span class="ident">CanvasSettings</span>, <span class="comment">// TODO Bit weird and hacky to mutate inside of draw() calls.</span> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">covered_areas</span>: <span class="ident">RefCell</span><span class="op"><</span><span class="ident">Vec</span><span class="op"><</span><span class="ident">ScreenRectangle</span><span class="op">></span><span class="op">></span>, <span class="comment">// Kind of just widgetry state awkwardly stuck here...</span> <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="ident">keys_held</span>: <span class="ident">HashSet</span><span class="op"><</span><span class="ident">Key</span><span class="op">></span>, } <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Serialize</span>, <span class="ident">Deserialize</span>)]</span> <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">CanvasSettings</span> { <span class="kw">pub</span> <span class="ident">invert_scroll</span>: <span class="ident">bool</span>, <span class="kw">pub</span> <span class="ident">touchpad_to_move</span>: <span class="ident">bool</span>, <span class="kw">pub</span> <span class="ident">edge_auto_panning</span>: <span class="ident">bool</span>, <span class="kw">pub</span> <span class="ident">keys_to_pan</span>: <span class="ident">bool</span>, <span class="kw">pub</span> <span class="ident">gui_scroll_speed</span>: <span class="ident">usize</span>, <span class="comment">// TODO Ideally this would be an f64, but elsewhere we use it in a Spinner. Until we override</span> <span class="comment">// the Display trait to do some rounding, floating point increments render pretty horribly.</span> <span class="kw">pub</span> <span class="ident">canvas_scroll_speed</span>: <span class="ident">usize</span>, <span class="doccomment">/// Some map-space elements are drawn differently when unzoomed and zoomed. This specifies the canvas</span> <span class="doccomment">/// zoom level where they switch. The concept of "unzoomed" and "zoomed" is used by</span> <span class="doccomment">/// `ToggleZoomed`.</span> <span class="kw">pub</span> <span class="ident">min_zoom_for_detail</span>: <span class="ident">f64</span>, } <span class="kw">impl</span> <span class="ident">CanvasSettings</span> { <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>() -> <span class="ident">CanvasSettings</span> { <span class="ident">CanvasSettings</span> { <span class="ident">invert_scroll</span>: <span class="bool-val">false</span>, <span class="ident">touchpad_to_move</span>: <span class="bool-val">false</span>, <span class="ident">edge_auto_panning</span>: <span class="bool-val">false</span>, <span class="ident">keys_to_pan</span>: <span class="bool-val">false</span>, <span class="ident">gui_scroll_speed</span>: <span class="number">5</span>, <span class="ident">canvas_scroll_speed</span>: <span class="number">10</span>, <span class="ident">min_zoom_for_detail</span>: <span class="number">4.0</span>, } } } <span class="kw">impl</span> <span class="ident">Canvas</span> { <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">initial_dims</span>: <span class="ident">ScreenDims</span>, <span class="ident">settings</span>: <span class="ident">CanvasSettings</span>) -> <span class="ident">Canvas</span> { <span class="ident">Canvas</span> { <span class="ident">cam_x</span>: <span class="number">0.0</span>, <span class="ident">cam_y</span>: <span class="number">0.0</span>, <span class="ident">cam_zoom</span>: <span class="number">1.0</span>, <span class="ident">cursor</span>: <span class="ident">ScreenPt::new</span>(<span class="number">0.0</span>, <span class="number">0.0</span>), <span class="ident">window_has_cursor</span>: <span class="bool-val">true</span>, <span class="ident">drag_canvas_from</span>: <span class="prelude-val">None</span>, <span class="ident">drag_just_ended</span>: <span class="bool-val">false</span>, <span class="ident">window_width</span>: <span class="ident">initial_dims</span>.<span class="ident">width</span>, <span class="ident">window_height</span>: <span class="ident">initial_dims</span>.<span class="ident">height</span>, <span class="ident">map_dims</span>: (<span class="number">0.0</span>, <span class="number">0.0</span>), <span class="ident">settings</span>, <span class="ident">covered_areas</span>: <span class="ident">RefCell::new</span>(<span class="ident">Vec::new</span>()), <span class="ident">keys_held</span>: <span class="ident">HashSet::new</span>(), } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">max_zoom</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">f64</span> { <span class="number">50.0</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">min_zoom</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">f64</span> { <span class="kw">let</span> <span class="ident">percent_window</span> <span class="op">=</span> <span class="number">0.8</span>; (<span class="ident">percent_window</span> <span class="op">*</span> <span class="self">self</span>.<span class="ident">window_width</span> <span class="op">/</span> <span class="self">self</span>.<span class="ident">map_dims</span>.<span class="number">0</span>) .<span class="ident">min</span>(<span class="ident">percent_window</span> <span class="op">*</span> <span class="self">self</span>.<span class="ident">window_height</span> <span class="op">/</span> <span class="self">self</span>.<span class="ident">map_dims</span>.<span class="number">1</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_max_zoom</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">cam_zoom</span> <span class="op">></span><span class="op">=</span> <span class="self">self</span>.<span class="ident">max_zoom</span>() } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_min_zoom</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">cam_zoom</span> <span class="op"><</span><span class="op">=</span> <span class="self">self</span>.<span class="ident">min_zoom</span>() } <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">handle_event</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">input</span>: <span class="kw-2">&mut</span> <span class="ident">UserInput</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">UpdateType</span><span class="op">></span> { <span class="comment">// Can't start dragging or zooming on top of covered area</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">map_pt</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_cursor_in_map_space</span>() { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">settings</span>.<span class="ident">touchpad_to_move</span> { <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>((<span class="ident">scroll_x</span>, <span class="ident">scroll_y</span>)) <span class="op">=</span> <span class="ident">input</span>.<span class="ident">get_mouse_scroll</span>() { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">keys_held</span>.<span class="ident">contains</span>(<span class="kw-2">&</span><span class="ident">Key::LeftControl</span>) { <span class="self">self</span>.<span class="ident">zoom</span>(<span class="ident">scroll_y</span>, <span class="self">self</span>.<span class="ident">cursor</span>); } <span class="kw">else</span> { <span class="comment">// Woo, inversion is different for the two. :P</span> <span class="self">self</span>.<span class="ident">cam_x</span> <span class="op">+</span><span class="op">=</span> <span class="ident">scroll_x</span> <span class="op">*</span> <span class="ident">PAN_SPEED</span>; <span class="self">self</span>.<span class="ident">cam_y</span> <span class="op">-</span><span class="op">=</span> <span class="ident">scroll_y</span> <span class="op">*</span> <span class="ident">PAN_SPEED</span>; } } } <span class="kw">else</span> { <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">left_mouse_button_pressed</span>() { <span class="self">self</span>.<span class="ident">drag_canvas_from</span> <span class="op">=</span> <span class="prelude-val">Some</span>((<span class="self">self</span>.<span class="ident">get_cursor</span>(), <span class="self">self</span>.<span class="ident">get_cursor</span>())); } <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>((<span class="kw">_</span>, <span class="ident">scroll</span>)) <span class="op">=</span> <span class="ident">input</span>.<span class="ident">get_mouse_scroll</span>() { <span class="self">self</span>.<span class="ident">zoom</span>(<span class="ident">scroll</span>, <span class="self">self</span>.<span class="ident">cursor</span>); } } <span class="kw">if</span> <span class="self">self</span>.<span class="ident">settings</span>.<span class="ident">keys_to_pan</span> { <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">pressed</span>(<span class="ident">Key::LeftArrow</span>) { <span class="self">self</span>.<span class="ident">cam_x</span> <span class="op">-</span><span class="op">=</span> <span class="ident">PAN_SPEED</span>; } <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">pressed</span>(<span class="ident">Key::RightArrow</span>) { <span class="self">self</span>.<span class="ident">cam_x</span> <span class="op">+</span><span class="op">=</span> <span class="ident">PAN_SPEED</span>; } <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">pressed</span>(<span class="ident">Key::UpArrow</span>) { <span class="self">self</span>.<span class="ident">cam_y</span> <span class="op">-</span><span class="op">=</span> <span class="ident">PAN_SPEED</span>; } <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">pressed</span>(<span class="ident">Key::DownArrow</span>) { <span class="self">self</span>.<span class="ident">cam_y</span> <span class="op">+</span><span class="op">=</span> <span class="ident">PAN_SPEED</span>; } <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">pressed</span>(<span class="ident">Key::Q</span>) { <span class="self">self</span>.<span class="ident">zoom</span>( <span class="number">1.0</span>, <span class="ident">ScreenPt::new</span>(<span class="self">self</span>.<span class="ident">window_width</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="self">self</span>.<span class="ident">window_height</span> <span class="op">/</span> <span class="number">2.0</span>), ); } <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">pressed</span>(<span class="ident">Key::W</span>) { <span class="self">self</span>.<span class="ident">zoom</span>( <span class="op">-</span><span class="number">1.0</span>, <span class="ident">ScreenPt::new</span>(<span class="self">self</span>.<span class="ident">window_width</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="self">self</span>.<span class="ident">window_height</span> <span class="op">/</span> <span class="number">2.0</span>), ); } } <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">left_mouse_double_clicked</span>() { <span class="self">self</span>.<span class="ident">zoom</span>(<span class="number">8.0</span>, <span class="self">self</span>.<span class="ident">map_to_screen</span>(<span class="ident">map_pt</span>)); } } <span class="comment">// If we start the drag on the map and move the mouse off the map, keep dragging.</span> <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>((<span class="ident">click</span>, <span class="ident">orig</span>)) <span class="op">=</span> <span class="self">self</span>.<span class="ident">drag_canvas_from</span> { <span class="kw">let</span> <span class="ident">pt</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_cursor</span>(); <span class="self">self</span>.<span class="ident">cam_x</span> <span class="op">+</span><span class="op">=</span> <span class="ident">click</span>.<span class="ident">x</span> <span class="op">-</span> <span class="ident">pt</span>.<span class="ident">x</span>; <span class="self">self</span>.<span class="ident">cam_y</span> <span class="op">+</span><span class="op">=</span> <span class="ident">click</span>.<span class="ident">y</span> <span class="op">-</span> <span class="ident">pt</span>.<span class="ident">y</span>; <span class="self">self</span>.<span class="ident">drag_canvas_from</span> <span class="op">=</span> <span class="prelude-val">Some</span>((<span class="ident">pt</span>, <span class="ident">orig</span>)); <span class="kw">if</span> <span class="ident">input</span>.<span class="ident">left_mouse_button_released</span>() { <span class="kw">let</span> (<span class="kw">_</span>, <span class="ident">orig</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">drag_canvas_from</span>.<span class="ident">take</span>().<span class="ident">unwrap</span>(); <span class="kw">let</span> <span class="ident">dist</span> <span class="op">=</span> ((<span class="ident">pt</span>.<span class="ident">x</span> <span class="op">-</span> <span class="ident">orig</span>.<span class="ident">x</span>).<span class="ident">powi</span>(<span class="number">2</span>) <span class="op">+</span> (<span class="ident">pt</span>.<span class="ident">y</span> <span class="op">-</span> <span class="ident">orig</span>.<span class="ident">y</span>).<span class="ident">powi</span>(<span class="number">2</span>)).<span class="ident">sqrt</span>(); <span class="kw">if</span> <span class="ident">dist</span> <span class="op">></span> <span class="ident">DRAG_THRESHOLD</span> { <span class="self">self</span>.<span class="ident">drag_just_ended</span> <span class="op">=</span> <span class="bool-val">true</span>; } } } <span class="kw">else</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">drag_just_ended</span> { <span class="self">self</span>.<span class="ident">drag_just_ended</span> <span class="op">=</span> <span class="bool-val">false</span>; } <span class="kw">else</span> { <span class="kw">let</span> <span class="ident">cursor_screen_pt</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_cursor</span>().<span class="ident">to_pt</span>(); <span class="kw">let</span> <span class="ident">cursor_map_pt</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">screen_to_map</span>(<span class="self">self</span>.<span class="ident">get_cursor</span>()); <span class="kw">let</span> <span class="ident">inner_bounds</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_inner_bounds</span>(); <span class="kw">let</span> <span class="ident">map_bounds</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_map_bounds</span>(); <span class="kw">if</span> <span class="self">self</span>.<span class="ident">settings</span>.<span class="ident">edge_auto_panning</span> <span class="op">&&</span> <span class="op">!</span><span class="ident">inner_bounds</span>.<span class="ident">contains</span>(<span class="ident">cursor_screen_pt</span>) <span class="op">&&</span> <span class="ident">map_bounds</span>.<span class="ident">contains</span>(<span class="ident">cursor_map_pt</span>) <span class="op">&&</span> <span class="ident">input</span>.<span class="ident">nonblocking_is_update_event</span>().<span class="ident">is_some</span>() { <span class="kw">let</span> <span class="ident">center_pt</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">center_to_screen_pt</span>().<span class="ident">to_pt</span>(); <span class="kw">let</span> <span class="ident">displacement_x</span> <span class="op">=</span> <span class="ident">cursor_screen_pt</span>.<span class="ident">x</span>() <span class="op">-</span> <span class="ident">center_pt</span>.<span class="ident">x</span>(); <span class="kw">let</span> <span class="ident">displacement_y</span> <span class="op">=</span> <span class="ident">cursor_screen_pt</span>.<span class="ident">y</span>() <span class="op">-</span> <span class="ident">center_pt</span>.<span class="ident">y</span>(); <span class="kw">let</span> <span class="ident">displacement_magnitude</span> <span class="op">=</span> <span class="ident">f64::sqrt</span>(<span class="ident">displacement_x</span>.<span class="ident">powf</span>(<span class="number">2.0</span>) <span class="op">+</span> <span class="ident">displacement_y</span>.<span class="ident">powf</span>(<span class="number">2.0</span>)); <span class="kw">let</span> <span class="ident">displacement_unit_x</span> <span class="op">=</span> <span class="ident">displacement_x</span> <span class="op">/</span> <span class="ident">displacement_magnitude</span>; <span class="kw">let</span> <span class="ident">displacement_unit_y</span> <span class="op">=</span> <span class="ident">displacement_y</span> <span class="op">/</span> <span class="ident">displacement_magnitude</span>; <span class="comment">// Add displacement along each axis</span> <span class="self">self</span>.<span class="ident">cam_x</span> <span class="op">+</span><span class="op">=</span> <span class="ident">displacement_unit_x</span> <span class="op">*</span> <span class="ident">PAN_SPEED</span>; <span class="self">self</span>.<span class="ident">cam_y</span> <span class="op">+</span><span class="op">=</span> <span class="ident">displacement_unit_y</span> <span class="op">*</span> <span class="ident">PAN_SPEED</span>; <span class="kw">return</span> <span class="prelude-val">Some</span>(<span class="ident">UpdateType::Pan</span>); } } <span class="prelude-val">None</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">center_zoom</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">delta</span>: <span class="ident">f64</span>) { <span class="self">self</span>.<span class="ident">zoom</span>(<span class="ident">delta</span>, <span class="self">self</span>.<span class="ident">center_to_screen_pt</span>()) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">zoom</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">delta</span>: <span class="ident">f64</span>, <span class="ident">focus</span>: <span class="ident">ScreenPt</span>) { <span class="kw">let</span> <span class="ident">old_zoom</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">cam_zoom</span>; <span class="comment">// By popular request, some limits ;)</span> <span class="self">self</span>.<span class="ident">cam_zoom</span> <span class="op">=</span> <span class="number">1.1_f64</span> .<span class="ident">powf</span>(<span class="ident">old_zoom</span>.<span class="ident">log</span>(<span class="number">1.1</span>) <span class="op">+</span> <span class="ident">delta</span> <span class="op">*</span> (<span class="self">self</span>.<span class="ident">settings</span>.<span class="ident">canvas_scroll_speed</span> <span class="kw">as</span> <span class="ident">f64</span> <span class="op">/</span> <span class="number">10.0</span>)) .<span class="ident">max</span>(<span class="self">self</span>.<span class="ident">min_zoom</span>()) .<span class="ident">min</span>(<span class="self">self</span>.<span class="ident">max_zoom</span>()); <span class="comment">// Make screen_to_map of the focus point still point to the same thing after</span> <span class="comment">// zooming.</span> <span class="self">self</span>.<span class="ident">cam_x</span> <span class="op">=</span> ((<span class="self">self</span>.<span class="ident">cam_zoom</span> <span class="op">/</span> <span class="ident">old_zoom</span>) <span class="op">*</span> (<span class="ident">focus</span>.<span class="ident">x</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">cam_x</span>)) <span class="op">-</span> <span class="ident">focus</span>.<span class="ident">x</span>; <span class="self">self</span>.<span class="ident">cam_y</span> <span class="op">=</span> ((<span class="self">self</span>.<span class="ident">cam_zoom</span> <span class="op">/</span> <span class="ident">old_zoom</span>) <span class="op">*</span> (<span class="ident">focus</span>.<span class="ident">y</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">cam_y</span>)) <span class="op">-</span> <span class="ident">focus</span>.<span class="ident">y</span>; } <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">start_drawing</span>(<span class="kw-2">&</span><span class="self">self</span>) { <span class="self">self</span>.<span class="ident">covered_areas</span>.<span class="ident">borrow_mut</span>().<span class="ident">clear</span>(); } <span class="comment">// TODO Only public for the OSD. :(</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">mark_covered_area</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">rect</span>: <span class="ident">ScreenRectangle</span>) { <span class="self">self</span>.<span class="ident">covered_areas</span>.<span class="ident">borrow_mut</span>().<span class="ident">push</span>(<span class="ident">rect</span>); } <span class="comment">// Might be hovering anywhere.</span> <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_cursor</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">ScreenPt</span> { <span class="self">self</span>.<span class="ident">cursor</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_cursor_in_screen_space</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">ScreenPt</span><span class="op">></span> { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">window_has_cursor</span> <span class="op">&&</span> <span class="self">self</span>.<span class="ident">get_cursor_in_map_space</span>().<span class="ident">is_none</span>() { <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">get_cursor</span>()) } <span class="kw">else</span> { <span class="prelude-val">None</span> } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_cursor_in_map_space</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">Pt2D</span><span class="op">></span> { <span class="kw">if</span> <span class="self">self</span>.<span class="ident">window_has_cursor</span> { <span class="kw">let</span> <span class="ident">pt</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_cursor</span>(); <span class="kw">for</span> <span class="ident">rect</span> <span class="kw">in</span> <span class="self">self</span>.<span class="ident">covered_areas</span>.<span class="ident">borrow</span>().<span class="ident">iter</span>() { <span class="kw">if</span> <span class="ident">rect</span>.<span class="ident">contains</span>(<span class="ident">pt</span>) { <span class="kw">return</span> <span class="prelude-val">None</span>; } } <span class="prelude-val">Some</span>(<span class="self">self</span>.<span class="ident">screen_to_map</span>(<span class="ident">pt</span>)) } <span class="kw">else</span> { <span class="prelude-val">None</span> } } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">screen_to_map</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">pt</span>: <span class="ident">ScreenPt</span>) -> <span class="ident">Pt2D</span> { <span class="ident">Pt2D::new</span>( (<span class="ident">pt</span>.<span class="ident">x</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">cam_x</span>) <span class="op">/</span> <span class="self">self</span>.<span class="ident">cam_zoom</span>, (<span class="ident">pt</span>.<span class="ident">y</span> <span class="op">+</span> <span class="self">self</span>.<span class="ident">cam_y</span>) <span class="op">/</span> <span class="self">self</span>.<span class="ident">cam_zoom</span>, ) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">center_to_screen_pt</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">ScreenPt</span> { <span class="ident">ScreenPt::new</span>(<span class="self">self</span>.<span class="ident">window_width</span> <span class="op">/</span> <span class="number">2.0</span>, <span class="self">self</span>.<span class="ident">window_height</span> <span class="op">/</span> <span class="number">2.0</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">center_to_map_pt</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Pt2D</span> { <span class="self">self</span>.<span class="ident">screen_to_map</span>(<span class="self">self</span>.<span class="ident">center_to_screen_pt</span>()) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">center_on_map_pt</span>(<span class="kw-2">&mut</span> <span class="self">self</span>, <span class="ident">pt</span>: <span class="ident">Pt2D</span>) { <span class="self">self</span>.<span class="ident">cam_x</span> <span class="op">=</span> (<span class="ident">pt</span>.<span class="ident">x</span>() <span class="op">*</span> <span class="self">self</span>.<span class="ident">cam_zoom</span>) <span class="op">-</span> (<span class="self">self</span>.<span class="ident">window_width</span> <span class="op">/</span> <span class="number">2.0</span>); <span class="self">self</span>.<span class="ident">cam_y</span> <span class="op">=</span> (<span class="ident">pt</span>.<span class="ident">y</span>() <span class="op">*</span> <span class="self">self</span>.<span class="ident">cam_zoom</span>) <span class="op">-</span> (<span class="self">self</span>.<span class="ident">window_height</span> <span class="op">/</span> <span class="number">2.0</span>); } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">map_to_screen</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">pt</span>: <span class="ident">Pt2D</span>) -> <span class="ident">ScreenPt</span> { <span class="ident">ScreenPt::new</span>( (<span class="ident">pt</span>.<span class="ident">x</span>() <span class="op">*</span> <span class="self">self</span>.<span class="ident">cam_zoom</span>) <span class="op">-</span> <span class="self">self</span>.<span class="ident">cam_x</span>, (<span class="ident">pt</span>.<span class="ident">y</span>() <span class="op">*</span> <span class="self">self</span>.<span class="ident">cam_zoom</span>) <span class="op">-</span> <span class="self">self</span>.<span class="ident">cam_y</span>, ) } <span class="comment">// the inner bound tells us whether auto-panning should or should not take place</span> <span class="kw">fn</span> <span class="ident">get_inner_bounds</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Bounds</span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">b</span> <span class="op">=</span> <span class="ident">Bounds::new</span>(); <span class="ident">b</span>.<span class="ident">update</span>(<span class="ident">ScreenPt::new</span>(<span class="ident">PANNING_THRESHOLD</span>, <span class="ident">PANNING_THRESHOLD</span>).<span class="ident">to_pt</span>()); <span class="ident">b</span>.<span class="ident">update</span>( <span class="ident">ScreenPt::new</span>( <span class="self">self</span>.<span class="ident">window_width</span> <span class="op">-</span> <span class="ident">PANNING_THRESHOLD</span>, <span class="self">self</span>.<span class="ident">window_height</span> <span class="op">-</span> <span class="ident">PANNING_THRESHOLD</span>, ) .<span class="ident">to_pt</span>(), ); <span class="ident">b</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_window_dims</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">ScreenDims</span> { <span class="ident">ScreenDims::new</span>(<span class="self">self</span>.<span class="ident">window_width</span>, <span class="self">self</span>.<span class="ident">window_height</span>) } <span class="kw">fn</span> <span class="ident">get_map_bounds</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Bounds</span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">b</span> <span class="op">=</span> <span class="ident">Bounds::new</span>(); <span class="ident">b</span>.<span class="ident">update</span>(<span class="ident">Pt2D::new</span>(<span class="number">0.0</span>, <span class="number">0.0</span>)); <span class="ident">b</span>.<span class="ident">update</span>(<span class="ident">Pt2D::new</span>(<span class="self">self</span>.<span class="ident">map_dims</span>.<span class="number">0</span>, <span class="self">self</span>.<span class="ident">map_dims</span>.<span class="number">1</span>)); <span class="ident">b</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_screen_bounds</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">Bounds</span> { <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">b</span> <span class="op">=</span> <span class="ident">Bounds::new</span>(); <span class="ident">b</span>.<span class="ident">update</span>(<span class="self">self</span>.<span class="ident">screen_to_map</span>(<span class="ident">ScreenPt::new</span>(<span class="number">0.0</span>, <span class="number">0.0</span>))); <span class="ident">b</span>.<span class="ident">update</span>(<span class="self">self</span>.<span class="ident">screen_to_map</span>(<span class="ident">ScreenPt::new</span>(<span class="self">self</span>.<span class="ident">window_width</span>, <span class="self">self</span>.<span class="ident">window_height</span>))); <span class="ident">b</span> } <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">align_window</span>( <span class="kw-2">&</span><span class="self">self</span>, <span class="ident">dims</span>: <span class="ident">ScreenDims</span>, <span class="ident">horiz</span>: <span class="ident">HorizontalAlignment</span>, <span class="ident">vert</span>: <span class="ident">VerticalAlignment</span>, ) -> <span class="ident">ScreenPt</span> { <span class="kw">let</span> <span class="ident">x1</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">horiz</span> { <span class="ident">HorizontalAlignment::Left</span> => <span class="number">0.0</span>, <span class="ident">HorizontalAlignment::LeftInset</span> => <span class="ident">INSET</span>, <span class="ident">HorizontalAlignment::Center</span> => (<span class="self">self</span>.<span class="ident">window_width</span> <span class="op">-</span> <span class="ident">dims</span>.<span class="ident">width</span>) <span class="op">/</span> <span class="number">2.0</span>, <span class="ident">HorizontalAlignment::Right</span> => <span class="self">self</span>.<span class="ident">window_width</span> <span class="op">-</span> <span class="ident">dims</span>.<span class="ident">width</span>, <span class="ident">HorizontalAlignment::RightInset</span> => <span class="self">self</span>.<span class="ident">window_width</span> <span class="op">-</span> <span class="ident">dims</span>.<span class="ident">width</span> <span class="op">-</span> <span class="ident">INSET</span>, <span class="ident">HorizontalAlignment::Percent</span>(<span class="ident">pct</span>) => <span class="ident">pct</span> <span class="op">*</span> <span class="self">self</span>.<span class="ident">window_width</span>, <span class="ident">HorizontalAlignment::Centered</span>(<span class="ident">x</span>) => <span class="ident">x</span> <span class="op">-</span> (<span class="ident">dims</span>.<span class="ident">width</span> <span class="op">/</span> <span class="number">2.0</span>), }; <span class="kw">let</span> <span class="ident">y1</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">vert</span> { <span class="ident">VerticalAlignment::Top</span> => <span class="number">0.0</span>, <span class="ident">VerticalAlignment::TopInset</span> => <span class="ident">INSET</span>, <span class="ident">VerticalAlignment::Center</span> => (<span class="self">self</span>.<span class="ident">window_height</span> <span class="op">-</span> <span class="ident">dims</span>.<span class="ident">height</span>) <span class="op">/</span> <span class="number">2.0</span>, <span class="ident">VerticalAlignment::Bottom</span> => <span class="self">self</span>.<span class="ident">window_height</span> <span class="op">-</span> <span class="ident">dims</span>.<span class="ident">height</span>, <span class="ident">VerticalAlignment::BottomInset</span> => <span class="self">self</span>.<span class="ident">window_height</span> <span class="op">-</span> <span class="ident">dims</span>.<span class="ident">height</span> <span class="op">-</span> <span class="ident">INSET</span>, <span class="comment">// TODO Hack</span> <span class="ident">VerticalAlignment::BottomAboveOSD</span> => <span class="self">self</span>.<span class="ident">window_height</span> <span class="op">-</span> <span class="ident">dims</span>.<span class="ident">height</span> <span class="op">-</span> <span class="number">60.0</span>, <span class="ident">VerticalAlignment::Percent</span>(<span class="ident">pct</span>) => <span class="ident">pct</span> <span class="op">*</span> <span class="self">self</span>.<span class="ident">window_height</span>, <span class="ident">VerticalAlignment::Above</span>(<span class="ident">y</span>) => <span class="ident">y</span> <span class="op">-</span> <span class="ident">dims</span>.<span class="ident">height</span>, <span class="ident">VerticalAlignment::Below</span>(<span class="ident">y</span>) => <span class="ident">y</span>, }; <span class="ident">ScreenPt::new</span>(<span class="ident">x1</span>, <span class="ident">y1</span>) } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_unzoomed</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">cam_zoom</span> <span class="op"><</span> <span class="self">self</span>.<span class="ident">settings</span>.<span class="ident">min_zoom_for_detail</span> } <span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">is_zoomed</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="self">self</span>.<span class="ident">cam_zoom</span> <span class="op">></span><span class="op">=</span> <span class="self">self</span>.<span class="ident">settings</span>.<span class="ident">min_zoom_for_detail</span> } <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">is_dragging</span>(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="ident">bool</span> { <span class="comment">// This could be called before or after handle_event. So we need to repeat the threshold</span> <span class="comment">// check here! Alternatively, we could this upfront in runner.</span> <span class="kw">if</span> <span class="self">self</span>.<span class="ident">drag_just_ended</span> { <span class="kw">return</span> <span class="bool-val">true</span>; } <span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>((<span class="kw">_</span>, <span class="ident">orig</span>)) <span class="op">=</span> <span class="self">self</span>.<span class="ident">drag_canvas_from</span> { <span class="kw">let</span> <span class="ident">pt</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">get_cursor</span>(); <span class="kw">let</span> <span class="ident">dist</span> <span class="op">=</span> ((<span class="ident">pt</span>.<span class="ident">x</span> <span class="op">-</span> <span class="ident">orig</span>.<span class="ident">x</span>).<span class="ident">powi</span>(<span class="number">2</span>) <span class="op">+</span> (<span class="ident">pt</span>.<span class="ident">y</span> <span class="op">-</span> <span class="ident">orig</span>.<span class="ident">y</span>).<span class="ident">powi</span>(<span class="number">2</span>)).<span class="ident">sqrt</span>(); <span class="kw">if</span> <span class="ident">dist</span> <span class="op">></span> <span class="ident">DRAG_THRESHOLD</span> { <span class="kw">return</span> <span class="bool-val">true</span>; } } <span class="bool-val">false</span> } } <span class="kw">const</span> <span class="ident">INSET</span>: <span class="ident">f64</span> <span class="op">=</span> <span class="number">16.0</span>; <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span> <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">HorizontalAlignment</span> { <span class="ident">Left</span>, <span class="ident">LeftInset</span>, <span class="ident">Center</span>, <span class="ident">Right</span>, <span class="ident">RightInset</span>, <span class="ident">Percent</span>(<span class="ident">f64</span>), <span class="ident">Centered</span>(<span class="ident">f64</span>), } <span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>, <span class="ident">PartialEq</span>)]</span> <span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">VerticalAlignment</span> { <span class="ident">Top</span>, <span class="ident">TopInset</span>, <span class="ident">Center</span>, <span class="ident">Bottom</span>, <span class="ident">BottomInset</span>, <span class="ident">BottomAboveOSD</span>, <span class="ident">Percent</span>(<span class="ident">f64</span>), <span class="ident">Above</span>(<span class="ident">f64</span>), <span class="ident">Below</span>(<span class="ident">f64</span>), } </code></pre></div> </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="widgetry" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.64.0 (a55dd71d5 2022-09-19)" ></div></body></html>