Notepad text zoom support 5x8 to 8x16 font (#1211)

* Zoom button 5/8 to 8/16 font

* Zoom button 5/8 to 8/16 font

* Clang & revert unintended change

* Suggested improvements

* Suggested code changes

* Added char_width function

* Added char_width function

* Oops copy-paste error

* Delete added blank line

firmware/application/apps/ui_text_editor.cpp

@@ -42,10 +42,9 @@ namespace ui {
 /* TextViewer *******************************************************/
 
 TextViewer::TextViewer(Rect parent_rect)
-    : Widget(parent_rect),
+    : Widget(parent_rect) {
-      max_line{static_cast<uint8_t>(parent_rect.height() / char_height)},
-      max_col{static_cast<uint8_t>(parent_rect.width() / char_width)} {
     set_focusable(true);
+    set_font_zoom(false);
 }
 
 void TextViewer::paint(Painter& painter) {
@@ -207,7 +206,7 @@ void TextViewer::paint_text(Painter& painter, uint32_t line, uint16_t col) {
         if (result && *result > 0)
             painter.draw_string(
                 {0, r.top() + (int)i * char_height},
-                Styles::white_small, {buffer, *result});
+                style(), {buffer, *result});
 
         // Clear empty line sections. This is less visually jarring than full clear.
         int32_t clear_width = max_col - (result ? *result : 0);
@@ -216,7 +215,7 @@ void TextViewer::paint_text(Painter& painter, uint32_t line, uint16_t col) {
                 {(max_col - clear_width) * char_width,
                  r.top() + (int)i * char_height,
                  clear_width * char_width, char_height},
-                Styles::white_small.background);
+                style().background);
     }
 }
 
@@ -237,8 +236,8 @@ void TextViewer::paint_cursor(Painter& painter) {
     };
 
     // Clear old cursor. CONSIDER: XOR cursor?
-    draw_cursor(paint_state_.line, paint_state_.col, Styles::white_small.background);
+    draw_cursor(paint_state_.line, paint_state_.col, style().background);
-    draw_cursor(cursor_.line, cursor_.col, Styles::white_small.foreground);
+    draw_cursor(cursor_.line, cursor_.col, style().foreground);
     paint_state_.line = cursor_.line;
     paint_state_.col = cursor_.col;
 }
@@ -261,7 +260,7 @@ TextEditorMenu::TextEditorMenu()
             &rect_frame,
             &button_cut,
             &button_paste,
-            &button_copy,
+            &button_zoom,
             &button_delline,
             &button_edit,
             &button_addline,
@@ -316,8 +315,10 @@ TextEditorView::TextEditorView(NavigationView& nav)
     menu.on_paste() = [this]() {
         show_nyi();
     };
-    menu.on_copy() = [this]() {
+    menu.on_zoom() = [this]() {
-        show_nyi();
+        viewer.toggle_font_zoom();
+        refresh_ui();
+        hide_menu(true);
     };
 
     menu.on_delete_line() = [this]() {

firmware/application/apps/ui_text_editor.hpp

@@ -75,12 +75,26 @@ class TextViewer : public Widget {
     // Gets the length of the current line.
     uint16_t line_length();
 
-   private:
+    const Style& style() { return *font_style; }
-    static constexpr int8_t char_width = 5;
-    static constexpr int8_t char_height = 8;
 
-    const uint8_t max_line = 32;
+    void set_font_zoom(bool zoom) {
-    const uint8_t max_col = 48;
+        font_zoom = zoom;
+        font_style = font_zoom ? &Styles::white : &Styles::white_small;
+        char_height = style().font.line_height();
+        char_width = style().font.char_width();
+        max_line = (uint8_t)(parent_rect().height() / char_height);
+        max_col = (uint8_t)(parent_rect().width() / char_width);
+    }
+
+    void toggle_font_zoom() { set_font_zoom(!font_zoom); };
+
+   private:
+    bool font_zoom{};
+    const Style* font_style{};
+    int8_t char_width{};
+    int8_t char_height{};
+    uint8_t max_line{};
+    uint8_t max_col{};
 
     /* Returns true if the cursor was updated. */
     bool apply_scrolling_constraints(
@@ -122,7 +136,7 @@ class TextEditorMenu : public View {
 
     std::function<void()>& on_cut() { return button_cut.on_select; }
     std::function<void()>& on_paste() { return button_paste.on_select; }
-    std::function<void()>& on_copy() { return button_copy.on_select; }
+    std::function<void()>& on_zoom() { return button_zoom.on_select; }
 
     std::function<void()>& on_delete_line() { return button_delline.on_select; }
     std::function<void()>& on_edit_line() { return button_edit.on_select; }
@@ -151,11 +165,11 @@ class TextEditorMenu : public View {
         &bitmap_icon_paste,
         Color::dark_grey()};
 
-    NewButton button_copy{
+    NewButton button_zoom{
         {15 * 8, 1 * 8, 7 * 8, 7 * 8},
-        "Copy",
+        "Zoom",
-        &bitmap_icon_copy,
+        &bitmap_icon_search,
-        Color::dark_grey()};
+        Color::dark_green()};
 
     NewButton button_delline{
         {1 * 8, 8 * 8, 7 * 8, 7 * 8},

firmware/common/ui_text.cpp

@@ -39,6 +39,10 @@ Dim Font::line_height() const {
     return h;
 }
 
+Dim Font::char_width() const {
+    return w;
+}
+
 Size Font::size_of(const std::string s) const {
     Size size;
 

firmware/common/ui_text.hpp

@@ -86,6 +86,8 @@ class Font {
     Glyph glyph(const char c) const;
 
     Dim line_height() const;
+    Dim char_width() const;
+
     Size size_of(const std::string s) const;
 
    private: