453 lines
13 KiB
C++
453 lines
13 KiB
C++
/*************************************************************************/
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/* color_ramp_edit.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "color_ramp_edit.h"
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#include "os/keyboard.h"
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ColorRampEdit::ColorRampEdit(){
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grabbed=-1;
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grabbing=false;
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set_focus_mode(FOCUS_ALL);
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popup = memnew( PopupPanel );
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picker = memnew( ColorPicker );
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popup->add_child(picker);
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popup->set_child_rect(picker);
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add_child(popup);
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checker = Ref<ImageTexture>(memnew( ImageTexture ));
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checker->create_from_image( Image(checker_bg_png),ImageTexture::FLAG_REPEAT );
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}
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int ColorRampEdit::_get_point_from_pos(int x) {
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int result = -1;
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int total_w = get_size().width-get_size().height-3;
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for(int i=0;i<points.size();i++) {
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//Check if we clicked at point
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if (ABS(x-points[i].offset*total_w+1)<(POINT_WIDTH/2+1)) {
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result=i;
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}
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}
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return result;
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}
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void ColorRampEdit::_show_color_picker() {
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if (grabbed==-1)
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return;
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Size2 ms = Size2(350, picker->get_combined_minimum_size().height+10);
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picker->set_color(points[grabbed].color);
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popup->set_pos(get_global_pos()-Vector2(ms.width-get_size().width,ms.height));
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popup->set_size(ms);
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popup->popup();
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}
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ColorRampEdit::~ColorRampEdit() {
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}
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void ColorRampEdit::_input_event(const InputEvent& p_event) {
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if (p_event.type==InputEvent::KEY && p_event.key.pressed && p_event.key.scancode==KEY_DELETE && grabbed!=-1) {
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points.remove(grabbed);
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grabbed=-1;
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grabbing=false;
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update();
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emit_signal("ramp_changed");
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accept_event();
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}
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//Show color picker on double click.
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if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==1 && p_event.mouse_button.doubleclick && p_event.mouse_button.pressed) {
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grabbed=_get_point_from_pos(p_event.mouse_button.x);
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_show_color_picker();
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accept_event();
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}
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//Delete point on right click
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if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==2 && p_event.mouse_button.pressed) {
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grabbed=_get_point_from_pos(p_event.mouse_button.x);
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if(grabbed != -1)
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{
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points.remove(grabbed);
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grabbed=-1;
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grabbing=false;
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update();
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emit_signal("ramp_changed");
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accept_event();
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}
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}
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//Hold alt key to duplicate selected color
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if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==1 && p_event.mouse_button.pressed && p_event.key.mod.alt ) {
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int x = p_event.mouse_button.x;
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grabbed=_get_point_from_pos(x);
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if( grabbed != -1 ) {
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int total_w = get_size().width-get_size().height-3;
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ColorRamp::Point newPoint = points[grabbed];
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newPoint.offset=CLAMP(x/float(total_w),0,1);
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points.push_back(newPoint);
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points.sort();
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for(int i=0;i<points.size();++i) {
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if (points[i].offset==newPoint.offset) {
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grabbed=i;
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break;
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}
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}
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emit_signal("ramp_changed");
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update();
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}
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}
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if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==1 && p_event.mouse_button.pressed) {
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update();
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int x = p_event.mouse_button.x;
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int total_w = get_size().width-get_size().height-3;
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//Check if color selector was clicked.
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if (x>total_w+3) {
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_show_color_picker();
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return;
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}
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grabbing=true;
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grabbed=_get_point_from_pos(x);
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//grab or select
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if (grabbed!=-1) {
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return;
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}
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//insert
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ColorRamp::Point newPoint;
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newPoint.offset=CLAMP(x/float(total_w),0,1);
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ColorRamp::Point prev;
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ColorRamp::Point next;
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int pos=-1;
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for(int i=0;i<points.size();i++) {
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if (points[i].offset<newPoint.offset)
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pos=i;
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}
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if (pos==-1) {
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prev.color=Color(0,0,0);
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prev.offset=0;
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if (points.size()) {
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next=points[0];
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} else {
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next.color=Color(1,1,1);
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next.offset=1.0;
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}
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} else {
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if (pos==points.size()-1) {
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next.color=Color(1,1,1);
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next.offset=1.0;
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} else {
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next=points[pos+1];
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}
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prev=points[pos];
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}
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newPoint.color=prev.color.linear_interpolate(next.color,(newPoint.offset-prev.offset)/(next.offset-prev.offset));
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points.push_back(newPoint);
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points.sort();
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for(int i=0;i<points.size();i++) {
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if (points[i].offset==newPoint.offset) {
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grabbed=i;
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break;
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}
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}
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emit_signal("ramp_changed");
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}
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if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==1 && !p_event.mouse_button.pressed) {
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if (grabbing) {
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grabbing=false;
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emit_signal("ramp_changed");
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}
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update();
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}
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if (p_event.type==InputEvent::MOUSE_MOTION && grabbing) {
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int total_w = get_size().width-get_size().height-3;
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int x = p_event.mouse_motion.x;
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float newofs = CLAMP(x/float(total_w),0,1);
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//Snap to nearest point if holding shift
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if (p_event.key.mod.shift) {
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float snap_treshhold = 0.03;
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float smallest_ofs = snap_treshhold;
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bool founded = false;
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int nearest_point;
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for(int i=0;i<points.size();++i) {
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if (i != grabbed) {
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float temp_ofs = ABS(points[i].offset - newofs);
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if (temp_ofs < smallest_ofs) {
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smallest_ofs = temp_ofs;
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nearest_point = i;
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if (founded)
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break;
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founded = true;
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}
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}
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}
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if (founded) {
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if (points[nearest_point].offset < newofs)
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newofs = points[nearest_point].offset+0.00001;
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else
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newofs = points[nearest_point].offset-0.00001;
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newofs = CLAMP(newofs,0,1);
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}
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}
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bool valid=true;
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for(int i=0;i<points.size();i++) {
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if (points[i].offset==newofs && i!=grabbed) {
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valid=false;
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}
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}
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if (!valid)
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return;
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points[grabbed].offset=newofs;
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points.sort();
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for(int i=0;i<points.size();i++) {
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if (points[i].offset==newofs) {
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grabbed=i;
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break;
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}
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}
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emit_signal("ramp_changed");
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update();
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}
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}
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void ColorRampEdit::_notification(int p_what) {
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if (p_what==NOTIFICATION_ENTER_TREE) {
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if (!picker->is_connected("color_changed",this,"_color_changed")) {
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picker->connect("color_changed",this,"_color_changed");
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}
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}
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if (p_what==NOTIFICATION_DRAW) {
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int w = get_size().x;
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int h = get_size().y;
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if (w == 0 || h == 0)
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return; //Safety check. We have division by 'h'. And in any case there is nothing to draw with such size
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int total_w = get_size().width-get_size().height-3;
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//Draw checker pattern for ramp
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_draw_checker(0,0, total_w, h);
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//Draw color ramp
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ColorRamp::Point prev;
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prev.offset=0;
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if(points.size() == 0)
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prev.color=Color(0,0,0); //Draw black rectangle if we have no points
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else
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prev.color = points[0].color; //Extend color of first point to the beginning.
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for(int i=-1;i<points.size();i++) {
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ColorRamp::Point next;
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//If there is no next point
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if (i+1 == points.size()) {
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if(points.size() == 0)
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next.color=Color(0,0,0); //Draw black rectangle if we have no points
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else
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next.color=points[i].color; //Extend color of last point to the end.
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next.offset=1;
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} else {
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next=points[i+1];
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}
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if (prev.offset==next.offset) {
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prev=next;
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continue;
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}
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Vector<Vector2> points;
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Vector<Color> colors;
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points.push_back(Vector2(prev.offset*total_w,h));
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points.push_back(Vector2(prev.offset*total_w,0));
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points.push_back(Vector2(next.offset*total_w,0));
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points.push_back(Vector2(next.offset*total_w,h));
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colors.push_back(prev.color);
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colors.push_back(prev.color);
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colors.push_back(next.color);
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colors.push_back(next.color);
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draw_primitive(points,colors,Vector<Point2>());
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prev=next;
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}
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//Draw point markers
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for(int i=0;i<points.size();i++) {
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Color col = i==grabbed?Color(1,0.0,0.0,0.9):points[i].color.contrasted();
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col.a = 0.9;
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draw_line(Vector2(points[i].offset*total_w,0),Vector2(points[i].offset*total_w,h/2),col);
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draw_rect(Rect2(points[i].offset*total_w-POINT_WIDTH/2, h/2, POINT_WIDTH, h/2), Color(0.6, 0.6, 0.6, i==grabbed?0.9:0.4));
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draw_line(Vector2(points[i].offset*total_w-POINT_WIDTH/2,h/2),Vector2(points[i].offset*total_w-POINT_WIDTH/2,h-1),col);
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draw_line(Vector2(points[i].offset*total_w+POINT_WIDTH/2,h/2),Vector2(points[i].offset*total_w+POINT_WIDTH/2,h-1),col);
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draw_line(Vector2(points[i].offset*total_w-POINT_WIDTH/2,h/2),Vector2(points[i].offset*total_w+POINT_WIDTH/2,h/2),col);
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draw_line(Vector2(points[i].offset*total_w-POINT_WIDTH/2,h-1),Vector2(points[i].offset*total_w+POINT_WIDTH/2,h-1),col);
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}
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//Draw "button" for color selector
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_draw_checker(total_w+3,0, h, h);
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if (grabbed!=-1) {
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//Draw with selection color
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draw_rect(Rect2(total_w+3,0,h,h),points[grabbed].color);
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} else {
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//if no color selected draw grey color with 'X' on top.
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draw_rect(Rect2(total_w+3,0,h,h), Color(0.5, 0.5, 0.5, 1));
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draw_line(Vector2(total_w+3,0),Vector2(total_w+3+h,h),Color(1,1,1,0.6));
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draw_line(Vector2(total_w+3,h),Vector2(total_w+3+h,0),Color(1,1,1,0.6));
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}
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//Draw borders around color ramp if in focus
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if (has_focus()) {
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draw_line(Vector2(-1,-1),Vector2(total_w+1,-1),Color(1,1,1,0.6));
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draw_line(Vector2(total_w+1,-1),Vector2(total_w+1,h+1),Color(1,1,1,0.6));
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draw_line(Vector2(total_w+1,h+1),Vector2(-1,h+1),Color(1,1,1,0.6));
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draw_line(Vector2(-1,-1),Vector2(-1,h+1),Color(1,1,1,0.6));
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}
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}
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}
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void ColorRampEdit::_draw_checker(int x, int y, int w, int h) {
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//Draw it with polygon to insert UVs for scale
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Vector<Vector2> backPoints;
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backPoints.push_back(Vector2(x, y));
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backPoints.push_back(Vector2(x, y+h));
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backPoints.push_back(Vector2(x+w, y+h));
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backPoints.push_back(Vector2(x+w, y));
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Vector<Color> colorPoints;
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colorPoints.push_back(Color(1, 1, 1, 1));
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colorPoints.push_back(Color(1, 1, 1, 1));
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colorPoints.push_back(Color(1, 1, 1, 1));
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colorPoints.push_back(Color(1, 1, 1, 1));
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Vector<Vector2> uvPoints;
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//Draw checker pattern pixel-perfect and scale it by 2.
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uvPoints.push_back(Vector2(x, y));
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uvPoints.push_back(Vector2(x, y+h*.5f/checker->get_height()));
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uvPoints.push_back(Vector2(x+w*.5f/checker->get_width(), y+h*.5f/checker->get_height()));
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uvPoints.push_back(Vector2(x+w*.5f/checker->get_width(), y));
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draw_polygon(backPoints, colorPoints, uvPoints, checker);
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}
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Size2 ColorRampEdit::get_minimum_size() const {
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return Vector2(0,16);
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}
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void ColorRampEdit::_color_changed(const Color& p_color) {
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if (grabbed==-1)
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return;
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points[grabbed].color=p_color;
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update();
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emit_signal("ramp_changed");
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}
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void ColorRampEdit::set_ramp(const Vector<float>& p_offsets,const Vector<Color>& p_colors) {
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ERR_FAIL_COND(p_offsets.size()!=p_colors.size());
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points.clear();
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for(int i=0;i<p_offsets.size();i++) {
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ColorRamp::Point p;
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p.offset=p_offsets[i];
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p.color=p_colors[i];
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points.push_back(p);
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}
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points.sort();
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update();
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}
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Vector<float> ColorRampEdit::get_offsets() const {
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Vector<float> ret;
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for(int i=0;i<points.size();i++)
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ret.push_back(points[i].offset);
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return ret;
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}
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Vector<Color> ColorRampEdit::get_colors() const {
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Vector<Color> ret;
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for(int i=0;i<points.size();i++)
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ret.push_back(points[i].color);
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return ret;
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}
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void ColorRampEdit::set_points(Vector<ColorRamp::Point>& p_points) {
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if(points.size() != p_points.size())
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grabbed = -1;
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points.clear();
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points = p_points;
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}
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Vector<ColorRamp::Point>& ColorRampEdit::get_points() {
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return points;
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}
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void ColorRampEdit::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("_input_event"),&ColorRampEdit::_input_event);
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ObjectTypeDB::bind_method(_MD("_color_changed"),&ColorRampEdit::_color_changed);
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ADD_SIGNAL(MethodInfo("ramp_changed"));
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}
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