cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly#define __SP_ZOOM_CONTEXT_C__

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith#include <gdk/gdkkeysyms.h>

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly#include "macros.h"

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly#include "rubberband.h"

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly#include "desktop.h"

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith#include "pixmaps/cursor-zoom.xpm"

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly#include "pixmaps/cursor-zoom-out.xpm"

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly#include "prefs-utils.h"

819e90d415ed17d59af3a247b2ad9d6feb0c21b5Luke Smith

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly#include "zoom-context.h"

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic void sp_zoom_context_class_init(SPZoomContextClass *klass);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic void sp_zoom_context_init(SPZoomContext *zoom_context);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic void sp_zoom_context_setup(SPEventContext *ec);

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smithstatic void sp_zoom_context_finish (SPEventContext *ec);

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smithstatic gint sp_zoom_context_root_handler(SPEventContext *event_context, GdkEvent *event);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic gint sp_zoom_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic SPEventContextClass *parent_class;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic gint xp = 0, yp = 0; // where drag started

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic gint tolerance = 0;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic bool within_tolerance = false;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic bool escaped;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny DonnellyGType sp_zoom_context_get_type(void)

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly{

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly static GType type = 0;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith if (!type) {

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith GTypeInfo info = {

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith sizeof(SPZoomContextClass),

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly NULL, NULL,

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly (GClassInitFunc) sp_zoom_context_class_init,

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith NULL, NULL,

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly sizeof(SPZoomContext),

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly 4,

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly (GInstanceInitFunc) sp_zoom_context_init,

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith NULL, /* value_table */

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly };

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPZoomContext", &info, (GTypeFlags) 0);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly }

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly return type;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly}

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic void sp_zoom_context_class_init(SPZoomContextClass *klass)

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly{

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly SPEventContextClass *event_context_class = (SPEventContextClass *) klass;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly parent_class = (SPEventContextClass*) g_type_class_peek_parent(klass);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly event_context_class->setup = sp_zoom_context_setup;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly event_context_class->finish = sp_zoom_context_finish;

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly event_context_class->root_handler = sp_zoom_context_root_handler;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly event_context_class->item_handler = sp_zoom_context_item_handler;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly}

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic void sp_zoom_context_init (SPZoomContext *zoom_context)

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly{

eb17ee6092f0f0c34723b1344149f7eab4286a40Luke Smith SPEventContext *event_context = SP_EVENT_CONTEXT(zoom_context);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly event_context->cursor_shape = cursor_zoom_xpm;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly event_context->hot_x = 6;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly event_context->hot_y = 6;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly}

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic void

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellysp_zoom_context_finish (SPEventContext *ec)

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly{

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith ec->enableGrDrag(false);

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith}

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smithstatic void sp_zoom_context_setup(SPEventContext *ec)

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith{

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith if (prefs_get_int_attribute("tools.zoom", "selcue", 0) != 0) {

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly ec->enableSelectionCue();

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith }

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith if (prefs_get_int_attribute("tools.zoom", "gradientdrag", 0) != 0) {

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith ec->enableGrDrag();

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith }

994d0b3f447aa108b0ed35a5e4a8d82a62b6fb0fLuke Smith

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly if (((SPEventContextClass *) parent_class)->setup) {

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly ((SPEventContextClass *) parent_class)->setup(ec);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly }

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly}

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic gint sp_zoom_context_item_handler(SPEventContext *event_context, SPItem *item, GdkEvent *event)

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly{

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly gint ret = FALSE;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly if (((SPEventContextClass *) parent_class)->item_handler) {

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly ret = ((SPEventContextClass *) parent_class)->item_handler (event_context, item, event);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly }

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith return ret;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly}

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnellystatic gint sp_zoom_context_root_handler(SPEventContext *event_context, GdkEvent *event)

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly{

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly SPDesktop *desktop = event_context->desktop;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly tolerance = prefs_get_int_attribute_limited ("options.dragtolerance", "value", 0, 0, 100);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly double const zoom_inc = prefs_get_double_attribute_limited("options.zoomincrement", "value", M_SQRT2, 1.01, 10);

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly gint ret = FALSE;

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly

cf6c1ae1ed15095f8dc269bb9d7a373a1b87990eJenny Donnelly switch (event->type) {

c7aeb2c8479a339ddcc01cf5973c31ddd6277b0dLuke Smith case GDK_BUTTON_PRESS:

if (event->button.button == 1 && !event_context->space_panning) {

// save drag origin

xp = (gint) event->button.x;

yp = (gint) event->button.y;

within_tolerance = true;

NR::Point const button_w(event->button.x, event->button.y);

NR::Point const button_dt(desktop->w2d(button_w));

Inkscape::Rubberband::get()->start(desktop, button_dt);

escaped = false;

ret = TRUE;

}

break;

case GDK_MOTION_NOTIFY:

if (event->motion.state & GDK_BUTTON1_MASK && !event_context->space_panning) {

ret = TRUE;

if ( within_tolerance

&& ( abs( (gint) event->motion.x - xp ) < tolerance )

&& ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {

break; // do not drag if we're within tolerance from origin

}

// Once the user has moved farther than tolerance from the original location

// (indicating they intend to move the object, not click), then always process the

// motion notify coordinates as given (no snapping back to origin)

within_tolerance = false;

NR::Point const motion_w(event->motion.x, event->motion.y);

NR::Point const motion_dt(desktop->w2d(motion_w));

Inkscape::Rubberband::get()->move(motion_dt);

}

break;

case GDK_BUTTON_RELEASE:

if ( event->button.button == 1 && !event_context->space_panning) {

NR::Maybe<NR::Rect> const b = Inkscape::Rubberband::get()->getRectangle();

if (b && !within_tolerance) {

desktop->set_display_area(*b, 10);

} else if (!escaped) {

NR::Point const button_w(event->button.x, event->button.y);

NR::Point const button_dt(desktop->w2d(button_w));

double const zoom_rel( (event->button.state & GDK_SHIFT_MASK)

? 1 / zoom_inc

: zoom_inc );

desktop->zoom_relative_keep_point(button_dt, zoom_rel);

}

ret = TRUE;

}

Inkscape::Rubberband::get()->stop();

xp = yp = 0;

escaped = false;

break;

case GDK_KEY_PRESS:

switch (get_group0_keyval (&event->key)) {

case GDK_Escape:

Inkscape::Rubberband::get()->stop();

xp = yp = 0;

escaped = true;

ret = TRUE;

break;

case GDK_Up:

case GDK_Down:

case GDK_KP_Up:

case GDK_KP_Down:

// prevent the zoom field from activation

if (!MOD__CTRL_ONLY)

ret = TRUE;

break;

case GDK_Shift_L:

case GDK_Shift_R:

event_context->cursor_shape = cursor_zoom_out_xpm;

sp_event_context_update_cursor(event_context);

break;

default:

break;

}

break;

case GDK_KEY_RELEASE:

switch (get_group0_keyval (&event->key)) {

case GDK_Shift_L:

case GDK_Shift_R:

event_context->cursor_shape = cursor_zoom_xpm;

sp_event_context_update_cursor(event_context);

break;

default:

break;

}

break;

default:

break;

}

if (!ret) {

if (((SPEventContextClass *) parent_class)->root_handler) {

ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);

}

}

return ret;

}