Add scroll hotkeys

Author: LagoLunatic

objdiff-gui/src/hotkeys.rs

@@ -1,4 +1,4 @@
-use egui::{Context, Key, PointerButton};
+use egui::{style::ScrollAnimation, vec2, Context, Key, PointerButton};
 
 pub fn enter_pressed(ctx: &Context) -> bool {
     ctx.input_mut(|i| i.key_pressed(Key::Enter) || i.pointer.button_pressed(PointerButton::Extra2))
@@ -9,3 +9,36 @@ pub fn back_pressed(ctx: &Context) -> bool {
         i.key_pressed(Key::Backspace) || i.pointer.button_pressed(PointerButton::Extra1)
     })
 }
+
+pub fn up_pressed(ctx: &Context) -> bool {
+    ctx.input_mut(|i| i.key_pressed(Key::ArrowUp) || i.key_pressed(Key::W))
+}
+
+pub fn down_pressed(ctx: &Context) -> bool {
+    ctx.input_mut(|i| i.key_pressed(Key::ArrowDown) || i.key_pressed(Key::S))
+}
+
+pub fn page_up_pressed(ctx: &Context) -> bool { ctx.input_mut(|i| i.key_pressed(Key::PageUp)) }
+
+pub fn page_down_pressed(ctx: &Context) -> bool { ctx.input_mut(|i| i.key_pressed(Key::PageDown)) }
+
+pub fn home_pressed(ctx: &Context) -> bool { ctx.input_mut(|i| i.key_pressed(Key::Home)) }
+
+pub fn end_pressed(ctx: &Context) -> bool { ctx.input_mut(|i| i.key_pressed(Key::End)) }
+
+pub fn check_scroll_hotkeys(ui: &mut egui::Ui) {
+    let ui_height = ui.available_rect_before_wrap().height();
+    if up_pressed(ui.ctx()) {
+        ui.scroll_with_delta_animation(vec2(0.0, ui_height / 10.0), ScrollAnimation::none());
+    } else if down_pressed(ui.ctx()) {
+        ui.scroll_with_delta_animation(vec2(0.0, -ui_height / 10.0), ScrollAnimation::none());
+    } else if page_up_pressed(ui.ctx()) {
+        ui.scroll_with_delta_animation(vec2(0.0, ui_height), ScrollAnimation::none());
+    } else if page_down_pressed(ui.ctx()) {
+        ui.scroll_with_delta_animation(vec2(0.0, -ui_height), ScrollAnimation::none());
+    } else if home_pressed(ui.ctx()) {
+        ui.scroll_with_delta_animation(vec2(0.0, f32::INFINITY), ScrollAnimation::none());
+    } else if end_pressed(ui.ctx()) {
+        ui.scroll_with_delta_animation(vec2(0.0, -f32::INFINITY), ScrollAnimation::none());
+    }
+}

objdiff-gui/src/views/data_diff.rs

@@ -179,6 +179,8 @@ fn data_table_ui(
     let left_diffs = left_section.map(|(_, section)| split_diffs(&section.data_diff));
     let right_diffs = right_section.map(|(_, section)| split_diffs(&section.data_diff));
 
+    hotkeys::check_scroll_hotkeys(ui);
+
     render_table(ui, available_width, 2, config.code_font.size, total_rows, |row, column| {
         let i = row.index();
         let address = i * BYTES_PER_ROW;

objdiff-gui/src/views/extab_diff.rs

@@ -235,6 +235,8 @@ pub fn extab_diff_ui(
         }
     });
 
+    hotkeys::check_scroll_hotkeys(ui);
+
     // Table
     render_strips(ui, available_width, 2, |ui, column| {
         if column == 0 {

objdiff-gui/src/views/function_diff.rs

@@ -435,6 +435,7 @@ fn asm_table_ui(
     };
     if left_len.is_some() && right_len.is_some() {
         // Joint view
+        hotkeys::check_scroll_hotkeys(ui);
         render_table(
             ui,
             available_width,

objdiff-gui/src/views/symbol_diff.rs

@@ -649,6 +649,8 @@ pub fn symbol_list_ui(
             }
         }
 
+        hotkeys::check_scroll_hotkeys(ui);
+
         ui.scope(|ui| {
             ui.style_mut().override_text_style = Some(egui::TextStyle::Monospace);
             ui.style_mut().wrap_mode = Some(egui::TextWrapMode::Extend);