mirror of
git://projects.qi-hardware.com/fped.git
synced 2024-11-24 09:07:31 +02:00
Dragging a frame into the canvas now works. It's built on top of the frame
tool, with all the old code still around, so the code paths are a bit obscure. - gui_frame_drag.c: use GTK_DEST_DEFAULT_MOTION instead of GTK_DEST_DEFAULT_HIGHLIGHT - gui_frame_drag.c: put meat on the frame and canvas drag and drop skeleton - gui_frame_drag.c (setup_frame_drag, setup_canvas_drag): use GDK_ACTION_COPY instead of GDK_ACTION_PRIVATE - gui_frame_drag.h, gui_frame_drag.c (is_dragging_anything): new helper function to check if we're dragging anything, without specifying what - gui_canvas.h, gui_canvas.c: added thin interface layer between gui_frame.c and gui_tool.c - gui_canvas.c (enter_notify_event, leave_notify_event): return FALSE so that other widgets can get the events, too - gui_tool.h, gui_tool.c (tool_hover): return whether we found anything to hover on - gui_tool.h, gui_tool.c: added interface for dropping a frame on the canvas git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5932 99fdad57-331a-0410-800a-d7fa5415bdb3
This commit is contained in:
werner
parent
a4d2926b2d
commit
0b241a14fe
42
gui_canvas.c
42
gui_canvas.c
@ -187,6 +187,41 @@ static gboolean motion_notify_event(GtkWidget *widget, GdkEventMotion *event,
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}
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/* ----- drag and drop (frame to canvas) ----------------------------------- */
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void canvas_frame_begin(struct frame *frame)
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{
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tool_push_frame(frame);
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}
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int canvas_frame_motion(struct frame *frame, int x, int y)
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{
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struct coord pos = canvas_to_coord(x, y);
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return tool_hover(pos);
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}
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void canvas_frame_end(void)
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{
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tool_dehover();
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tool_pop_frame();
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}
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int canvas_frame_drop(struct frame *frame, int x, int y)
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{
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struct coord pos = canvas_to_coord(x, y);
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if (!tool_place_frame(frame, pos))
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return FALSE;
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change_world();
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return TRUE;
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}
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/* ----- button press and release ------------------------------------------ */
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@ -254,6 +289,8 @@ static gboolean button_release_event(GtkWidget *widget, GdkEventButton *event,
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DPRINTF("--- button release ---");
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switch (event->button) {
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case 1:
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if (is_dragging_anything())
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return FALSE;
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if (!dragging)
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break;
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drag_left(pos);
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@ -448,8 +485,9 @@ static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event,
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static gboolean enter_notify_event(GtkWidget *widget, GdkEventCrossing *event,
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gpointer data)
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{
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DPRINTF("--- enter ---");
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gtk_widget_grab_focus(widget);
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return TRUE;
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return FALSE;
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}
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@ -461,7 +499,7 @@ static gboolean leave_notify_event(GtkWidget *widget, GdkEventCrossing *event,
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tool_cancel_drag();
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tool_dehover();
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dragging = 0;
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return TRUE;
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return FALSE;
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}
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@ -1,8 +1,8 @@
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/*
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* gui_canvas.h - GUI, canvas
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*
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* Written 2009 by Werner Almesberger
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* Copyright 2009 by Werner Almesberger
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* Written 2009, 2010 by Werner Almesberger
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* Copyright 2009, 2010 by Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -34,6 +34,11 @@ void zoom_out_center(void);
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void zoom_to_frame(void);
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void zoom_to_extents(void);
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void canvas_frame_begin(struct frame *frame);
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int canvas_frame_motion(struct frame *frame, int x, int y);
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void canvas_frame_end(void);
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int canvas_frame_drop(struct frame *frame, int x, int y);
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GtkWidget *make_canvas(void);
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void init_canvas(void);
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124
gui_frame_drag.c
124
gui_frame_drag.c
@ -15,8 +15,14 @@
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#include "obj.h"
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#include "gui_util.h"
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#include "gui.h"
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#include "gui_canvas.h"
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#include "gui_frame_drag.h"
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#if 0
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#include "icons/frame.xpm"
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#endif
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enum {
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target_id_var,
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@ -61,6 +67,12 @@ int is_dragging(void *this)
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}
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int is_dragging_anything(void)
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{
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return !!dragging;
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}
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/* ----- helper functions for indexed list and swapping -------------------- */
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@ -273,7 +285,7 @@ void setup_var_drag(struct var *var)
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box = box_of_label(var->widget);
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gtk_drag_source_set(box, GDK_BUTTON1_MASK,
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&target_var, 1, GDK_ACTION_PRIVATE);
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gtk_drag_dest_set(box, GTK_DEST_DEFAULT_HIGHLIGHT,
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gtk_drag_dest_set(box, GTK_DEST_DEFAULT_MOTION,
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&target_var, 1, GDK_ACTION_PRIVATE);
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setup_drag_common(box, var);
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g_signal_connect(G_OBJECT(box), "drag-motion",
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@ -342,7 +354,7 @@ void setup_value_drag(struct value *value)
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box = box_of_label(value->widget);
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gtk_drag_source_set(box, GDK_BUTTON1_MASK,
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&target_value, 1, GDK_ACTION_PRIVATE);
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gtk_drag_dest_set(box, GTK_DEST_DEFAULT_HIGHLIGHT,
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gtk_drag_dest_set(box, GTK_DEST_DEFAULT_MOTION,
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&target_value, 1, GDK_ACTION_PRIVATE);
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setup_drag_common(box, value);
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g_signal_connect(G_OBJECT(box), "drag-motion",
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@ -350,17 +362,66 @@ void setup_value_drag(struct value *value)
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}
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/* ----- frame to canvas helper functions ---------------------------------- */
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static int frame_on_canvas = 0;
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static void leave_canvas(void)
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{
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if (frame_on_canvas)
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canvas_frame_end();
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frame_on_canvas = 0;
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}
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/* ----- drag frame labels ------------------------------------------------- */
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#if 0
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/*
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* Setting our own icon looks nice but it slows things down to the point where
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* cursor movements can lag noticeable and it adds yet another element to an
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* already crowded cursor.
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*/
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static void drag_frame_begin(GtkWidget *widget,
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GtkTextDirection previous_direction, gpointer user_data)
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{
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GdkPixmap *pixmap;
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GdkBitmap *mask;
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GdkColormap *cmap;
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pixmap = gdk_pixmap_create_from_xpm_d(DA, &mask, NULL, xpm_frame);
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cmap = gdk_drawable_get_colormap(root->window);
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gtk_drag_source_set_icon(widget, cmap, pixmap, mask);
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g_object_unref(pixmap);
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g_object_unref(mask);
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dragging = user_data;
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}
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#endif
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static gboolean drag_frame_motion(GtkWidget *widget,
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GdkDragContext *drag_context, gint x, gint y, guint time_,
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gpointer user_data)
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{
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if (!has_target(widget, drag_context, "frame"))
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return FALSE;
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//fprintf(stderr, "frame\n");
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return FALSE;
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/* nothing else to do yet */
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return FALSE;
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}
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static void drag_frame_end(GtkWidget *widget, GdkDragContext *drag_context,
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gpointer user_data)
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{
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leave_canvas();
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drag_end(widget, drag_context, user_data);
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}
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@ -370,8 +431,17 @@ void setup_frame_drag(struct frame *frame)
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box = box_of_label(frame->label);
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gtk_drag_source_set(box, GDK_BUTTON1_MASK,
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&target_frame, 1, GDK_ACTION_PRIVATE);
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&target_frame, 1, GDK_ACTION_COPY);
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setup_drag_common(box, frame);
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/* override */
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#if 0
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g_signal_connect(G_OBJECT(box), "drag-begin",
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G_CALLBACK(drag_frame_begin), frame);
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#endif
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g_signal_connect(G_OBJECT(box), "drag-end",
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G_CALLBACK(drag_frame_end), frame);
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g_signal_connect(G_OBJECT(box), "drag-motion",
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G_CALLBACK(drag_frame_motion), frame);
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}
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@ -386,16 +456,52 @@ static gboolean drag_canvas_motion(GtkWidget *widget,
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{
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if (!has_target(widget, drag_context, "frame"))
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return FALSE;
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//fprintf(stderr, "canvas\n");
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gtk_drag_finish(drag_context, FALSE, FALSE, time_);
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return FALSE;
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if (!frame_on_canvas) {
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frame_on_canvas = 1;
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canvas_frame_begin(dragging);
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}
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if (canvas_frame_motion(dragging, x, y)) {
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gdk_drag_status(drag_context, GDK_ACTION_COPY, time_);
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return TRUE;
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} else {
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gdk_drag_status(drag_context, 0, time_);
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return FALSE;
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}
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}
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static void drag_canvas_leave(GtkWidget *widget, GdkDragContext *drag_context,
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guint time_, gpointer user_data)
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{
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leave_canvas();
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}
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static gboolean drag_canvas_drop(GtkWidget *widget,
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GdkDragContext *drag_context, gint x, gint y, guint time_,
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gpointer user_data)
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{
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if (!has_target(widget, drag_context, "frame"))
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return FALSE;
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if (!canvas_frame_drop(dragging, x, y))
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return FALSE;
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gtk_drag_finish(drag_context, TRUE, FALSE, time_);
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return TRUE;
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}
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void setup_canvas_drag(GtkWidget *canvas)
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{
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gtk_drag_dest_set(canvas, GTK_DEST_DEFAULT_HIGHLIGHT,
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&target_frame, 1, GDK_ACTION_PRIVATE);
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setup_drag_common(canvas, NULL);
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gtk_drag_dest_set(canvas,
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GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_DROP,
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&target_frame, 1, GDK_ACTION_COPY);
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g_signal_connect(G_OBJECT(canvas), "drag-motion",
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G_CALLBACK(drag_canvas_motion), NULL);
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g_signal_connect(G_OBJECT(canvas), "drag-leave",
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G_CALLBACK(drag_canvas_leave), NULL);
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g_signal_connect(G_OBJECT(canvas), "drag-drop",
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G_CALLBACK(drag_canvas_drop), NULL);
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}
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@ -20,6 +20,7 @@
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int is_dragging(void *this);
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int is_dragging_anything(void);
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void setup_var_drag(struct var *var);
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void setup_value_drag(struct value *value);
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75
gui_tool.c
75
gui_tool.c
@ -803,7 +803,7 @@ static struct inst *get_hover_inst(struct coord pos)
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}
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void tool_hover(struct coord pos)
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int tool_hover(struct coord pos)
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{
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struct inst *curr;
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@ -825,15 +825,84 @@ got:
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#endif
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if (curr == hover_inst)
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return;
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return !!curr;
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if (hover_inst) {
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over_leave();
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hover_inst = NULL;
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}
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if (!curr)
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return;
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return 0;
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hover_inst = curr;
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over_enter(hover_save_and_draw, NULL);
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return 1;
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}
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/* ----- frame drag and drop ----------------------------------------------- */
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/*
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* When dragging a frame, we temporarily replace the selected tool (if any)
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* with the frame tool.
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*/
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static struct tool_ops *pushed_ops;
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void tool_push_frame(struct frame *frame)
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{
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pushed_ops = active_ops;
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locked_frame = frame;
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active_ops = &frame_ops;
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/*
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* We don't need to call tool_selected since, with drag and drop, the
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* frame tools doesn't need activation anymore.
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*/
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}
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static int do_place_frame(struct frame *frame, struct coord pos)
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{
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if (!get_hover_inst(pos))
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return 0;
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tool_consider_drag(pos);
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return 1;
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}
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/*
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* Gtk calls drag-leave, drag-end, and only then drag-drop. So we'll already
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* have cleaned up in tool_pop_frame before we get here. In order to place the
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* frame, we need to activate the frame tool again.
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*
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* @@@ bug: there's a tool_reset in this path, so we'll lose the widget of the
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* tool that's really active. This problem will vanish when scrapping the
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* old-style frame referenes.
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*/
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int tool_place_frame(struct frame *frame, struct coord pos)
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{
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int ok;
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active_ops = &frame_ops;
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ok = do_place_frame(frame, pos);
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active_ops = pushed_ops;
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return ok;
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}
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void tool_pop_frame(void)
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{
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if (!active_tool)
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return;
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active_ops = pushed_ops;
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/*
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* We don't need to call tool_selected since the only tool that could
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* use this would be the delete tool, and there the semantics would be
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* undesirable. Also, the delete tool never stays active, so it can't
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* appear together with drag and drop anyway.
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*/
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}
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@ -46,7 +46,7 @@ struct pix_buf *gui_hover_frame(struct inst *self);
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void do_move_to_arc(struct inst *inst, struct inst *to, int i);
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void tool_dehover(void);
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void tool_hover(struct coord pos);
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int tool_hover(struct coord pos);
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const char *tool_tip(struct coord pos);
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int tool_consider_drag(struct coord pos);
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void tool_drag(struct coord to);
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@ -73,6 +73,10 @@ struct pix_buf *drag_new_line(struct inst *from, struct coord to);
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void tool_frame_update(void);
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void tool_frame_deleted(const struct frame *frame);
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void tool_push_frame(struct frame *frame);
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int tool_place_frame(struct frame *frame, struct coord pos);
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void tool_pop_frame(void);
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void tool_selected_inst(struct inst *inst);
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GtkWidget *get_icon_by_inst(const struct inst *inst);
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