0N/A#define __SP_DROPPER_CONTEXT_C__

196N/A

0N/A

0N/A#ifdef HAVE_CONFIG_H

0N/A# include <config.h>

0N/A#endif

0N/A

0N/A#include <glibmm/i18n.h>

0N/A#include <glibmm/ustring.h>

0N/A#include <glibmm/refptr.h>

0N/A#include <gtkmm/clipboard.h>

0N/A#include <gdk/gdkkeysyms.h>

0N/A

0N/A#include "libnr/n-art-bpath.h"

0N/A#include "macros.h"

0N/A#include "display/canvas-bpath.h"

0N/A#include "display/canvas-arena.h"

0N/A#include "display/curve.h"

0N/A#include "svg/svg-color.h"

350N/A#include "color.h"

350N/A#include "color-rgba.h"

113N/A#include "desktop-style.h"

113N/A#include "prefs-utils.h"

0N/A#include "sp-namedview.h"

0N/A#include "desktop.h"

0N/A#include "desktop-handles.h"

0N/A#include "selection.h"

0N/A#include "document.h"

0N/A

350N/A#include "pixmaps/cursor-dropper.xpm"

350N/A

350N/A#include "dropper-context.h"

0N/A#include "message-context.h"

0N/A#include "libnr/nr-scale-translate-ops.h"

0N/A

0N/A#define C1 0.552

0N/Astatic NArtBpath const spdc_circle[] = {

1080N/A { NR_MOVETO, 0, 0, 0, 0, -1, 0 },

1080N/A { NR_CURVETO, -1, C1, -C1, 1, 0, 1 },

350N/A { NR_CURVETO, C1, 1, 1, C1, 1, 0 },

0N/A { NR_CURVETO, 1, -C1, C1, -1, 0, -1 },

0N/A { NR_CURVETO, -C1, -1, -1, -C1, -1, 0 },

0N/A { NR_END, 0, 0, 0, 0, 0, 0 }

0N/A};

0N/A#undef C1

0N/A

0N/Astatic void sp_dropper_context_class_init(SPDropperContextClass *klass);

0N/Astatic void sp_dropper_context_init(SPDropperContext *dc);

0N/A

0N/Astatic void sp_dropper_context_setup(SPEventContext *ec);

0N/Astatic void sp_dropper_context_finish(SPEventContext *ec);

0N/A

0N/Astatic gint sp_dropper_context_root_handler(SPEventContext *ec, GdkEvent * event);

0N/A

0N/Astatic SPEventContextClass *parent_class;

0N/A

0N/AGType sp_dropper_context_get_type()

0N/A{

0N/A static GType type = 0;

0N/A if (!type) {

0N/A GTypeInfo info = {

1067N/A sizeof(SPDropperContextClass),

1067N/A NULL, NULL,

1067N/A (GClassInitFunc) sp_dropper_context_class_init,

1067N/A NULL, NULL,

0N/A sizeof(SPDropperContext),

0N/A 4,

103N/A (GInstanceInitFunc) sp_dropper_context_init,

103N/A NULL, /* value_table */

103N/A };

103N/A type = g_type_register_static(SP_TYPE_EVENT_CONTEXT, "SPDropperContext", &info, (GTypeFlags) 0);

103N/A }

103N/A return type;

103N/A}

103N/A

103N/Astatic void sp_dropper_context_class_init(SPDropperContextClass *klass)

103N/A{

103N/A SPEventContextClass *ec_class = (SPEventContextClass *) klass;

103N/A

103N/A parent_class = (SPEventContextClass*)g_type_class_peek_parent(klass);

0N/A

0N/A ec_class->setup = sp_dropper_context_setup;

0N/A ec_class->finish = sp_dropper_context_finish;

0N/A ec_class->root_handler = sp_dropper_context_root_handler;

0N/A}

0N/A

0N/Astatic void sp_dropper_context_init(SPDropperContext *dc)

0N/A{

0N/A SPEventContext *event_context = SP_EVENT_CONTEXT(dc);

0N/A event_context->cursor_shape = cursor_dropper_xpm;

0N/A event_context->hot_x = 7;

0N/A event_context->hot_y = 7;

0N/A}

1067N/A

1067N/Astatic void sp_dropper_context_setup(SPEventContext *ec)

0N/A{

0N/A SPDropperContext *dc = SP_DROPPER_CONTEXT(ec);

103N/A

103N/A if (((SPEventContextClass *) parent_class)->setup) {

103N/A ((SPEventContextClass *) parent_class)->setup(ec);

103N/A }

103N/A

103N/A SPCurve *c = sp_curve_new_from_foreign_bpath(spdc_circle);

103N/A dc->area = sp_canvas_bpath_new(sp_desktop_controls(ec->desktop), c);

103N/A sp_curve_unref(c);

103N/A sp_canvas_bpath_set_fill(SP_CANVAS_BPATH(dc->area), 0x00000000,(SPWindRule)0);

103N/A sp_canvas_bpath_set_stroke(SP_CANVAS_BPATH(dc->area), 0x0000007f, 1.0, SP_STROKE_LINEJOIN_MITER, SP_STROKE_LINECAP_BUTT);

103N/A sp_canvas_item_hide(dc->area);

103N/A

103N/A if (prefs_get_int_attribute("tools.dropper", "selcue", 0) != 0) {

103N/A ec->enableSelectionCue();

103N/A }

0N/A

0N/A if (prefs_get_int_attribute("tools.dropper", "gradientdrag", 0) != 0) {

0N/A ec->enableGrDrag();

0N/A }

0N/A}

0N/A

0N/Astatic void sp_dropper_context_finish(SPEventContext *ec)

0N/A{

0N/A SPDropperContext *dc = SP_DROPPER_CONTEXT(ec);

0N/A

0N/A ec->enableGrDrag(false);

0N/A

0N/A if (dc->area) {

350N/A gtk_object_destroy(GTK_OBJECT(dc->area));

0N/A dc->area = NULL;

0N/A }

0N/A}

0N/A

0N/A

0N/Avoid sp_dropper_context_copy(SPEventContext *ec)

0N/A{

0N/A SPDropperContext *dc = SP_DROPPER_CONTEXT(ec);

0N/A

0N/A guint32 const c32 = SP_RGBA32_F_COMPOSE(dc->R, dc->G, dc->B, dc->alpha);

113N/A

113N/A int pick = prefs_get_int_attribute("tools.dropper", "pick",

113N/A SP_DROPPER_PICK_VISIBLE);

113N/A

113N/A int setalpha = prefs_get_int_attribute("tools.dropper", "setalpha", 1);

113N/A

0N/A gchar c[64];

0N/A g_snprintf(c, 64, "%06x%02x", c32 >> 8,

0N/A (pick == SP_DROPPER_PICK_ACTUAL && setalpha)? SP_COLOR_F_TO_U(dc->alpha) : 255);

0N/A

0N/A Glib::ustring text;

0N/A text += c;

0N/A if (!text.empty())

0N/A {

0N/A Glib::RefPtr<Gtk::Clipboard> refClipboard =

0N/A Gtk::Clipboard::get();

0N/A refClipboard->set_text(text);

0N/A }

0N/A}

0N/A

0N/Avoid sp_dropper_c32_color_copy(guint32 c32)

0N/A{

0N/A int const pick = prefs_get_int_attribute("tools.dropper", "pick",

0N/A SP_DROPPER_PICK_VISIBLE);

0N/A

0N/A gchar c[64];

0N/A g_snprintf(c, 64, "%06x%02x", c32 >> 8,

0N/A pick == SP_DROPPER_PICK_ACTUAL? SP_RGBA32_A_U(c32) : 255);

0N/A

0N/A Glib::ustring text;

0N/A text += c;

0N/A if (!text.empty()) {

350N/A Glib::RefPtr<Gtk::Clipboard> refClipboard = Gtk::Clipboard::get();

0N/A refClipboard->set_text(text);

342N/A }

350N/A}

342N/A

0N/A

0N/Avoid sp_dropper_c32_color_copy_hex(guint32 c32)

0N/A{

0N/A /*

0N/A

0N/A gchar c[48];

0N/A g_snprintf(c, 48, "%06x", c32 >> 8);

0N/A

0N/A Glib::ustring text;

0N/A text += c;

350N/A if (!text.empty()) {

350N/A Glib::RefPtr<Gtk::Clipboard> refClipboard = Gtk::Clipboard::get();

0N/A refClipboard->set_text(text);

0N/A }

0N/A}

0N/A

0N/A

0N/Astatic gint sp_dropper_context_root_handler(SPEventContext *event_context, GdkEvent *event)

0N/A{

0N/A SPDropperContext *dc = (SPDropperContext *) event_context;

0N/A int ret = FALSE;

0N/A SPDesktop *desktop = event_context->desktop;

0N/A

0N/A int pick = prefs_get_int_attribute("tools.dropper", "pick", SP_DROPPER_PICK_VISIBLE);

0N/A int setalpha = prefs_get_int_attribute("tools.dropper", "setalpha", 1);

0N/A

0N/A switch (event->type) {

0N/A case GDK_BUTTON_PRESS:

0N/A if (event->button.button == 1 && !event_context->space_panning) {

0N/A dc->centre = NR::Point(event->button.x, event->button.y);

0N/A dc->dragging = TRUE;

0N/A ret = TRUE;

13N/A }

13N/A break;

13N/A case GDK_MOTION_NOTIFY:

13N/A if (event->motion.state & GDK_BUTTON2_MASK) {

13N/A // pass on middle-drag

13N/A ret = FALSE;

13N/A break;

13N/A } else if (!event_context->space_panning) {

13N/A // otherwise, constantly calculate color no matter is any button pressed or not

13N/A

13N/A double rw = 0.0;

13N/A double W(0), R(0), G(0), B(0), A(0);

0N/A

0N/A if (dc->dragging) {

0N/A // calculate average

0N/A

0N/A // radius

0N/A rw = std::min(NR::L2(NR::Point(event->button.x, event->button.y) - dc->centre), 400.0);

0N/A

0N/A if (rw == 0) { // happens sometimes, little idea why...

0N/A break;

0N/A }

0N/A

0N/A NR::Point const cd = desktop->w2d(dc->centre);

0N/A NR::Matrix const w2dt = desktop->w2d();

0N/A const double scale = rw * NR::expansion(w2dt);

0N/A NR::Matrix const sm( NR::scale(scale, scale) * NR::translate(cd) );

0N/A sp_canvas_item_affine_absolute(dc->area, sm);

0N/A sp_canvas_item_show(dc->area);

0N/A

0N/A /* Get buffer */

0N/A const int x0 = (int) floor(dc->centre[NR::X] - rw);

0N/A const int y0 = (int) floor(dc->centre[NR::Y] - rw);

0N/A const int x1 = (int) ceil(dc->centre[NR::X] + rw);

0N/A const int y1 = (int) ceil(dc->centre[NR::Y] + rw);

0N/A

0N/A if ((x1 > x0) && (y1 > y0)) {

0N/A NRPixBlock pb;

0N/A nr_pixblock_setup_fast(&pb, NR_PIXBLOCK_MODE_R8G8B8A8P, x0, y0, x1, y1, TRUE);

0N/A /* fixme: (Lauris) */

0N/A sp_canvas_arena_render_pixblock(SP_CANVAS_ARENA(sp_desktop_drawing(desktop)), &pb);

0N/A for (int y = y0; y < y1; y++) {

0N/A const unsigned char *s = NR_PIXBLOCK_PX(&pb) + (y - y0) * pb.rs;

0N/A for (int x = x0; x < x1; x++) {

0N/A const double dx = x - dc->centre[NR::X];

0N/A const double dy = y - dc->centre[NR::Y];

0N/A const double w = exp(-((dx * dx) + (dy * dy)) / (rw * rw));

0N/A W += w;

0N/A R += w * s[0];

0N/A G += w * s[1];

0N/A B += w * s[2];

0N/A A += w * s[3];

0N/A s += 4;

0N/A }

0N/A }

0N/A nr_pixblock_release(&pb);

0N/A

0N/A R = (R + 0.001) / (255.0 * W);

0N/A G = (G + 0.001) / (255.0 * W);

0N/A B = (B + 0.001) / (255.0 * W);

0N/A A = (A + 0.001) / (255.0 * W);

0N/A

0N/A R = CLAMP(R, 0.0, 1.0);

0N/A G = CLAMP(G, 0.0, 1.0);

0N/A B = CLAMP(B, 0.0, 1.0);

0N/A A = CLAMP(A, 0.0, 1.0);

0N/A }

0N/A

0N/A } else {

0N/A // pick single pixel

0N/A NRPixBlock pb;

0N/A int x = (int) floor(event->button.x);

0N/A int y = (int) floor(event->button.y);

0N/A nr_pixblock_setup_fast(&pb, NR_PIXBLOCK_MODE_R8G8B8A8P, x, y, x+1, y+1, TRUE);

0N/A sp_canvas_arena_render_pixblock(SP_CANVAS_ARENA(sp_desktop_drawing(desktop)), &pb);

0N/A const unsigned char *s = NR_PIXBLOCK_PX(&pb);

0N/A

0N/A R = s[0] / 255.0;

0N/A G = s[1] / 255.0;

0N/A B = s[2] / 255.0;

0N/A A = s[3] / 255.0;

0N/A }

0N/A

0N/A if (pick == SP_DROPPER_PICK_VISIBLE) {

0N/A // compose with page color

0N/A guint32 bg = sp_desktop_namedview(desktop)->pagecolor;

0N/A R = R + (SP_RGBA32_R_F(bg)) * (1 - A);

0N/A G = G + (SP_RGBA32_G_F(bg)) * (1 - A);

0N/A B = B + (SP_RGBA32_B_F(bg)) * (1 - A);

0N/A A = 1.0;

0N/A } else {

0N/A // un-premultiply color channels

0N/A if (A > 0) {

0N/A R /= A;

0N/A G /= A;

0N/A B /= A;

0N/A }

1064N/A }

1064N/A

1064N/A if (fabs(A) < 1e-4) {

1064N/A A = 0; // suppress exponentials, CSS does not allow that

1064N/A }

1064N/A

1064N/A // remember color

1064N/A dc->R = R;

1064N/A dc->G = G;

1064N/A dc->B = B;

1064N/A dc->alpha = A;

1064N/A

1064N/A // status message

1064N/A double alpha_to_set = setalpha? dc->alpha : 1.0;

1064N/A guint32 c32 = SP_RGBA32_F_COMPOSE(R, G, B, alpha_to_set);

1064N/A

1064N/A gchar c[64];

1064N/A sp_svg_write_color(c, sizeof(c), c32);

1064N/A

1064N/A // alpha of color under cursor, to show in the statusbar

1064N/A // locale-sensitive printf is OK, since this goes to the UI, not into SVG

1064N/A gchar *alpha = g_strdup_printf(_(" alpha %.3g"), alpha_to_set);

1064N/A // where the color is picked, to show in the statusbar

1064N/A gchar *where = dc->dragging ? g_strdup_printf(_(", averaged with radius %d"), (int) rw) : g_strdup_printf(_(" under cursor"));

1064N/A // message, to show in the statusbar

1064N/A const gchar *message = dc->dragging ? _("<b>Release mouse</b> to set color.") : _("<b>Click</b> to set fill, <b>Shift+click</b> to set stroke; <b>drag</b> to average color in area; with <b>Alt</b> to pick inverse color; <b>Ctrl+C</b> to copy the color under mouse to clipboard");

0N/A event_context->defaultMessageContext()->setF(

0N/A Inkscape::NORMAL_MESSAGE,

0N/A "<b>%s%s</b>%s. %s", c,

0N/A (pick == SP_DROPPER_PICK_VISIBLE)? "" : alpha,

0N/A where, message

0N/A );

0N/A

0N/A g_free(where);

0N/A g_free(alpha);

0N/A

0N/A ret = TRUE;

0N/A }

0N/A break;

0N/A case GDK_BUTTON_RELEASE:

0N/A if (event->button.button == 1 && !event_context->space_panning)

0N/A {

0N/A sp_canvas_item_hide(dc->area);

0N/A dc->dragging = FALSE;

0N/A

0N/A double alpha_to_set = setalpha? dc->alpha : 1.0;

0N/A

0N/A // do the actual color setting

0N/A sp_desktop_set_color(desktop,

0N/A (event->button.state & GDK_MOD1_MASK)?

0N/A ColorRGBA(1 - dc->R, 1 - dc->G, 1 - dc->B, alpha_to_set) : ColorRGBA(dc->R, dc->G, dc->B, alpha_to_set),

0N/A false, !(event->button.state & GDK_SHIFT_MASK));

0N/A

0N/A // REJON: set aux. toolbar input to hex color!

0N/A

0N/A

0N/A if (!(sp_desktop_selection(desktop)->isEmpty())) {

0N/A sp_document_done(sp_desktop_document(desktop), SP_VERB_CONTEXT_DROPPER,

0N/A _("Set picked color"));

0N/A }

0N/A

0N/A ret = TRUE;

0N/A }

0N/A break;

0N/A case GDK_KEY_PRESS:

0N/A switch (get_group0_keyval(&event->key)) {

0N/A case GDK_Up:

370N/A case GDK_Down:

370N/A case GDK_KP_Up:

370N/A case GDK_KP_Down:

370N/A // prevent the zoom field from activation

370N/A if (!MOD__CTRL_ONLY) {

0N/A ret = TRUE;

0N/A }

0N/A break;

0N/A case GDK_Escape:

0N/A sp_desktop_selection(desktop)->clear();

0N/A default:

0N/A break;

0N/A }

0N/A break;

0N/A default:

0N/A break;

0N/A }

0N/A

0N/A if (!ret) {

0N/A if (((SPEventContextClass *) parent_class)->root_handler) {

0N/A ret = ((SPEventContextClass *) parent_class)->root_handler(event_context, event);

0N/A }

0N/A }

0N/A

0N/A return ret;

0N/A}

0N/A

0N/A

0N/A