From f50bff8e99ef64b37d9a353d1cfce2773e1f0a74 Mon Sep 17 00:00:00 2001
From: Andy Williams <andy@andywilliams.me>
Date: Sat, 4 Apr 2015 17:51:39 +0100
Subject: [PATCH] editor: Add a tooltip popup if you hover over a line with a
 warning attached

---
 legacy/elm_code/src/lib/Makefile.am           |  1 +
 legacy/elm_code/src/lib/elm_code_private.h    |  7 +++
 legacy/elm_code/src/lib/elm_code_widget.c     | 14 +++++-
 .../src/lib/elm_code_widget_tooltip.c         | 44 +++++++++++++++++++
 4 files changed, 64 insertions(+), 2 deletions(-)
 create mode 100644 legacy/elm_code/src/lib/elm_code_widget_tooltip.c

diff --git a/legacy/elm_code/src/lib/Makefile.am b/legacy/elm_code/src/lib/Makefile.am
index 9885cbda58..0bd1a4ebf8 100644
--- a/legacy/elm_code/src/lib/Makefile.am
+++ b/legacy/elm_code/src/lib/Makefile.am
@@ -36,6 +36,7 @@ elm_code_text.c \
 elm_code_file.c \
 elm_code_parse.c \
 elm_code_widget_text.c \
+elm_code_widget_tooltip.c \
 elm_code_widget_selection.c \
 elm_code_widget.c \
 elm_code_diff_widget.c \
diff --git a/legacy/elm_code/src/lib/elm_code_private.h b/legacy/elm_code/src/lib/elm_code_private.h
index 260d3ffc2d..57dae7c746 100644
--- a/legacy/elm_code/src/lib/elm_code_private.h
+++ b/legacy/elm_code/src/lib/elm_code_private.h
@@ -50,6 +50,7 @@ typedef struct
    Eina_Bool show_whitespace;
 
    Elm_Code_Widget_Selection_Data *selection;
+   Evas_Object *tooltip;
 } Elm_Code_Widget_Data;
 
 /* Private parser callbacks */
@@ -59,3 +60,9 @@ void _elm_code_parse_setup();
 void _elm_code_parse_line(Elm_Code *code, Elm_Code_Line *line);
 
 void _elm_code_parse_file(Elm_Code *code, Elm_Code_File *file);
+
+/* Private widget methods */
+
+void _elm_code_widget_tooltip_text_set(Evas_Object *widget, const char *text);
+
+void _elm_code_widget_tooltip_add(Evas_Object *widget);
diff --git a/legacy/elm_code/src/lib/elm_code_widget.c b/legacy/elm_code/src/lib/elm_code_widget.c
index 0d131e53ae..a7c6a00691 100644
--- a/legacy/elm_code/src/lib/elm_code_widget.c
+++ b/legacy/elm_code/src/lib/elm_code_widget.c
@@ -672,19 +672,28 @@ _elm_code_widget_mouse_move_cb(void *data, Evas *e EINA_UNUSED, Evas_Object *obj
 {
    Elm_Code_Widget *widget;
    Elm_Code_Widget_Data *pd;
+   Elm_Code_Line *line;
    Evas_Event_Mouse_Move *event;
    unsigned int row;
    int col;
+   Eina_Bool hasline;
 
    widget = (Elm_Code_Widget *)data;
    pd = eo_data_scope_get(widget, ELM_CODE_WIDGET_CLASS);
    event = (Evas_Event_Mouse_Move *)event_info;
 
+   hasline = _elm_code_widget_position_at_coordinates_get(widget, pd, event->cur.canvas.x, event->cur.canvas.y, &row, &col);
+   if (!hasline)
+     _elm_code_widget_tooltip_text_set(widget, NULL);
+   else
+     {
+        line = elm_code_file_line_get(pd->code->file, row);
+        _elm_code_widget_tooltip_text_set(widget, line->status_text);
+     }
+
    if (!pd->editable || !pd->selection || !event->buttons)
      return;
 
-   _elm_code_widget_position_at_coordinates_get(widget, pd, event->cur.canvas.x, event->cur.canvas.y, &row, &col);
-
    elm_code_widget_selection_end(widget, row, col);
 }
 
@@ -1360,6 +1369,7 @@ _elm_code_widget_evas_object_smart_add(Eo *obj, Elm_Code_Widget_Data *pd)
    evas_object_size_hint_weight_set(grid, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
    evas_object_size_hint_align_set(grid, EVAS_HINT_FILL, EVAS_HINT_FILL);
    evas_object_show(grid);
+   _elm_code_widget_tooltip_add(obj);
    elm_object_content_set(scroller, grid);
    pd->grid = grid;
    _elm_code_widget_setup_palette(grid);
diff --git a/legacy/elm_code/src/lib/elm_code_widget_tooltip.c b/legacy/elm_code/src/lib/elm_code_widget_tooltip.c
new file mode 100644
index 0000000000..18bee520e1
--- /dev/null
+++ b/legacy/elm_code/src/lib/elm_code_widget_tooltip.c
@@ -0,0 +1,44 @@
+#ifdef HAVE_CONFIG
+# include "config.h"
+#endif
+
+#include "Elm_Code.h"
+
+#include "elm_code_private.h"
+
+void
+_elm_code_widget_tooltip_text_set(Evas_Object *widget, const char *text)
+{
+   Elm_Code_Widget_Data *pd;
+
+   pd = eo_data_scope_get(widget, ELM_CODE_WIDGET_CLASS);
+
+   if (!text)
+     elm_object_tooltip_hide(widget);
+   else
+     elm_object_tooltip_show(widget);
+
+   if (pd->tooltip) // will have been created by the callback below...
+     elm_object_text_set(pd->tooltip, text);
+}
+
+static Evas_Object *
+_elm_code_widget_tooltip_cb(void *data EINA_UNUSED, Evas_Object *obj, Evas_Object *tooltip)
+{
+   Elm_Code_Widget_Data *pd;
+   Evas_Object *label;
+
+   pd = eo_data_scope_get(obj, ELM_CODE_WIDGET_CLASS);
+
+   label = elm_label_add(tooltip);
+   pd->tooltip = label;
+
+   return label;
+}
+
+void
+_elm_code_widget_tooltip_add(Evas_Object *widget)
+{
+   elm_object_tooltip_content_cb_set(widget, _elm_code_widget_tooltip_cb, NULL, NULL);
+}
+