Enlightenment CVS committal
Author : andrunko
Project : e17
Module : libs/etk
Dir : e17/libs/etk/src/bin
Modified Files:
etk_tree_test.c
Log Message:
Added simple kinetic scrolling example.
===================================================================
RCS file: /cvs/e/e17/libs/etk/src/bin/etk_tree_test.c,v
retrieving revision 1.47
retrieving revision 1.48
diff -u -3 -r1.47 -r1.48
--- etk_tree_test.c 24 Jul 2007 21:40:16 -0000 1.47
+++ etk_tree_test.c 13 Aug 2007 21:19:43 -0000 1.48
@@ -3,6 +3,29 @@
#include <string.h>
#include "config.h"
+typedef struct Etk_Test_Tree_Scroll_Kinetic_Info
Etk_Test_Tree_Scroll_Kinetic_Info;
+
+struct Etk_Test_Tree_Scroll_Kinetic_Info
+{
+ Etk_Bool clicked;
+ Etk_Bool moved;
+ int sps; /* amount of scroll events to generate per second */
+ int x;
+ int y;
+ int ex;
+ int ey;
+ double vel_x;
+ double vel_y;
+ double vmax; /* maximum scroll velocity in pixels */
+ double vmin; /* minimum scroll velocity in pixels */
+ double decel; /* multiplier used when decelerating */
+};
+
+static void _etk_test_tree_scroll(Etk_Widget *tree, double x, double y,
Etk_Bool *sx, Etk_Bool *sy);
+static int _etk_test_tree_scroll_timeout(void *data);
+static void _etk_test_tree_mouse_down_cb(Etk_Widget *widget,
Etk_Event_Mouse_Down *event, void *data);
+static void _etk_test_tree_mouse_up_cb(Etk_Widget *widget,
Etk_Event_Mouse_Down *event, void *data);
+static void _etk_test_tree_mouse_move_cb(Etk_Widget *widget,
Etk_Event_Mouse_Move *event, void *data);
static void _etk_test_tree_key_down_cb(Etk_Object *object, Etk_Event_Key_Down
*event, void *data);
static void _etk_test_tree_row_clicked_cb(Etk_Object *object, Etk_Tree_Row
*row, Etk_Event_Mouse_Up *event, void *data);
static void _etk_test_tree_checkbox_toggled_cb(Etk_Object *object,
Etk_Tree_Row *row, void *data);
@@ -17,6 +40,7 @@
Etk_Widget *vbox;
Etk_Widget *hbox;
Etk_Widget *tree;
+ Etk_Test_Tree_Scroll_Kinetic_Info *kinfo;
Etk_Widget *button;
Etk_Tree_Col *col1, *col2, *col3, *col4, *col5, *col6;
Etk_Tree_Row *row;
@@ -43,6 +67,17 @@
/* Create the tree widget */
tree = etk_tree_new();
+ kinfo = malloc(sizeof(Etk_Test_Tree_Scroll_Kinetic_Info));
+ kinfo->clicked = ETK_FALSE;
+ kinfo->moved = ETK_FALSE;
+ kinfo->sps = 15;
+ kinfo->vmax = 48;
+ kinfo->vmin = 0;
+ kinfo->decel = 0.95;
+ etk_object_data_set(ETK_OBJECT(tree), "_Etk_Test_Tree::Kinetic_Info",
kinfo);
+ etk_signal_connect("mouse-down", ETK_OBJECT(tree),
ETK_CALLBACK(_etk_test_tree_mouse_down_cb), NULL);
+ etk_signal_connect("mouse-up", ETK_OBJECT(tree),
ETK_CALLBACK(_etk_test_tree_mouse_up_cb), NULL);
+ etk_signal_connect("mouse-move", ETK_OBJECT(tree),
ETK_CALLBACK(_etk_test_tree_mouse_move_cb), NULL);
etk_tree_mode_set(ETK_TREE(tree), ETK_TREE_MODE_TREE);
etk_tree_multiple_select_set(ETK_TREE(tree), ETK_TRUE);
etk_widget_padding_set(tree, 5, 5, 5, 5);
@@ -141,8 +176,125 @@
ETK_CALLBACK(_etk_test_tree_row_clicked_cb), statusbar);
etk_signal_connect("cell-value-changed", ETK_OBJECT(col5),
ETK_CALLBACK(_etk_test_tree_checkbox_toggled_cb), statusbar);
-
+
etk_widget_show_all(win);
+}
+
+static void
+_etk_test_tree_scroll(Etk_Widget *tree, double x, double y, Etk_Bool *sx,
Etk_Bool *sy)
+{
+ Etk_Test_Tree_Scroll_Kinetic_Info *kinfo;
+ double h, v;
+ Etk_Range *hrange, *vrange;
+ Etk_Scrolled_View *scrolled_view;
+
+ kinfo = etk_object_data_get(ETK_OBJECT(tree),
"_Etk_Test_Tree::Kinetic_Info");
+
+ scrolled_view = etk_tree_scrolled_view_get(ETK_TREE(tree));
+ hrange = etk_scrolled_view_hscrollbar_get(scrolled_view);
+ vrange = etk_scrolled_view_vscrollbar_get(scrolled_view);
+
+ if (hrange) {
+ h = etk_range_value_get(hrange) - x;
+ if (h > hrange->upper - hrange->page_size) {
+ if (sx) *sx = FALSE;
+ h = hrange->upper - hrange->page_size;
+ } else if (h < hrange->lower) {
+ if (sx) *sx = FALSE;
+ h = hrange->lower;
+ } else if (sx)
+ *sx = TRUE;
+ etk_range_value_set(hrange, h);
+ }
+
+ if (vrange) {
+ v = etk_range_value_get(vrange) - y;
+ if (v > vrange->upper - vrange->page_size) {
+ if (sy) *sy = FALSE;
+ v = vrange->upper - vrange->page_size;
+ } else if (v < vrange->lower) {
+ if (sy) *sy = FALSE;
+ v = vrange->lower;
+ } else if (sy)
+ *sy = TRUE;
+ etk_range_value_set(vrange, v);
+ }
+}
+
+static int _etk_test_tree_scroll_timeout(void *data)
+{
+ Etk_Bool sx = ETK_FALSE, sy = ETK_FALSE;
+ Etk_Widget *tree = data;
+ Etk_Test_Tree_Scroll_Kinetic_Info *kinfo;
+
+ kinfo = etk_object_data_get(ETK_OBJECT(tree),
"_Etk_Test_Tree::Kinetic_Info");
+ if (!kinfo->clicked) {
+ kinfo->vel_x *= kinfo->decel;
+ kinfo->vel_y *= kinfo->decel;
+ if ((abs(kinfo->vel_x) < 1.0) && (abs(kinfo->vel_y) < 1.0))
+ return 0;
+ }
+
+ _etk_test_tree_scroll(tree, kinfo->vel_x, kinfo->vel_y, &sx, &sy);
+
+ if (!sx)
+ kinfo->x = kinfo->ex;
+ if (!sy)
+ kinfo->y = kinfo->ey;
+
+ return 1;
+}
+
+static void _etk_test_tree_mouse_down_cb(Etk_Widget *widget,
Etk_Event_Mouse_Down *event, void *data)
+{
+ Etk_Test_Tree_Scroll_Kinetic_Info *kinfo;
+
+ kinfo = etk_object_data_get(ETK_OBJECT(widget),
"_Etk_Test_Tree::Kinetic_Info");
+ kinfo->clicked = ETK_TRUE;
+ if ((abs(kinfo->vel_x) < (kinfo->vmax * 0.25)) &&
+ (abs(kinfo->vel_y) < (kinfo->vmax * 0.25)))
+ kinfo->moved = FALSE;
+ kinfo->x = event->widget.x;
+ kinfo->y = event->widget.y;
+ kinfo->vel_x = 0;
+ kinfo->vel_y = 0;
+}
+
+static void _etk_test_tree_mouse_up_cb(Etk_Widget *widget,
Etk_Event_Mouse_Down *event, void *data)
+{
+ Etk_Test_Tree_Scroll_Kinetic_Info *kinfo;
+
+ kinfo = etk_object_data_get(ETK_OBJECT(widget),
"_Etk_Test_Tree::Kinetic_Info");
+ kinfo->clicked = ETK_FALSE;
+}
+
+static void _etk_test_tree_mouse_move_cb(Etk_Widget *widget,
Etk_Event_Mouse_Move *event, void *data)
+{
+ Etk_Test_Tree_Scroll_Kinetic_Info *kinfo;
+ int evx, evy;
+
+ kinfo = etk_object_data_get(ETK_OBJECT(widget),
"_Etk_Test_Tree::Kinetic_Info");
+ if (!kinfo->clicked)
+ return;
+
+ evx = event->cur.widget.x - kinfo->x;
+ evy = event->cur.widget.y - kinfo->y;
+
+ if (!kinfo->moved)
+ {
+ kinfo->moved = ETK_TRUE;
+ ecore_timer_add(1.0 / kinfo->sps, _etk_test_tree_scroll_timeout, widget);
+ }
+
+ if (kinfo->moved)
+ {
+ kinfo->ex = event->cur.widget.x;
+ kinfo->ey = event->cur.widget.y;
+ kinfo->vel_x = ((evx > 0) ? 1 : -1) *
+ (((abs(evx) / (double)ETK_WIDGET(widget)->geometry.w) * (kinfo->vmax
- kinfo->vmin)) + kinfo->vmin);
+ kinfo->vel_y = ((evy > 0) ? 1 : -1) *
+ (((abs(evy) / (double)ETK_WIDGET(widget)->geometry.h) * (kinfo->vmax -
kinfo->vmin)) + kinfo->vmin);
+ }
}
/* Called when a key is pressed while the tree is focused:
-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems? Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/
_______________________________________________
enlightenment-cvs mailing list
enlightenment-cvs@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/enlightenment-cvs
