Pixel-Composer/scripts/node_padding/node_padding.gml

function Node_Padding(_x, _y, _group = noone) : Node_Processor(_x, _y, _group) constructor {
	name = "Padding";
	dimension_index = -1;
	
	newInput(0, nodeValue_Surface("Surface in", self));
	
	inputs[1] = nodeValue_Padding("Padding", self, [0, 0, 0, 0])
		.setUnitRef(function(index) { return getDimension(index); });
	
	newInput(2, nodeValue_Enum_Scroll("Fill method", self,  0, [ "Empty", "Solid" ]));
	
	newInput(3, nodeValue_Color("Fill color", self, c_black));
	
	newInput(4, nodeValue_Bool("Active", self, true));
		active_index = 4;
		
	newInput(5, nodeValue_Enum_Button("Pad mode", self,  0, [ "Pad out", "Pad to size" ]));
	
	inputs[6] = nodeValue_Vec2("Target dimension", self, DEF_SURF)
	
	newInput(7, nodeValue_Enum_Button("Horizontal alignment", self,  0 , [ THEME.inspector_surface_halign, THEME.inspector_surface_halign, THEME.inspector_surface_halign]));
	
	newInput(8, nodeValue_Enum_Button("Vertical alignment", self,  0 , [ THEME.inspector_surface_valign, THEME.inspector_surface_valign, THEME.inspector_surface_valign ]));
		
	outputs[0] = nodeValue_Output("Surface out", self, VALUE_TYPE.surface, noone);
	
	input_display_list = [ 4, 
		["Surfaces", true], 0, 
		["Padding", false], 5, 1, 6, 7, 8, 
		["Filling", false], 2, 3, 
	];
	
	attribute_surface_depth();
	
	static step = function() {
		var mode = getInputData(5);
		
		inputs[1].setVisible(mode == 0);
		
		inputs[6].setVisible(mode == 1);
		inputs[7].setVisible(mode == 1);
		inputs[8].setVisible(mode == 1);
	}
	
	static processData = function(_outSurf, _data, _output_index, _array_index) {
		var mode = _data[5];
		
		var surf    = _data[0];
		var padding	= _data[1];
		
		var dim 	= _data[6];
		var halign	= _data[7];
		var valign	= _data[8];
		
		var fill	= _data[2];
		var fillClr = _data[3];
		var cDep    = attrDepth();
		
		inputs[3].setVisible(fill);
		
		var ww	= surface_get_width_safe(surf);
		var hh	= surface_get_height_safe(surf);
		
		if(mode == 0) {
			var sw	= ww + padding[0] + padding[2];
			var sh	= hh + padding[1] + padding[3];
		
			if(sw > 1 && sh > 1) { 
				_outSurf = surface_verify(_outSurf, sw, sh, cDep);
			
				surface_set_target(_outSurf);
					if(fill == 0) {
						DRAW_CLEAR
						BLEND_OVERRIDE;
					} else if(fill == 1)
						draw_clear_alpha(fillClr, 1);
				
					draw_surface_safe(surf, padding[2], padding[1]);
					BLEND_NORMAL;
				surface_reset_target();
			}
		} else if(mode == 1) { 
			_outSurf = surface_verify(_outSurf, dim[0], dim[1], cDep);
			
			surface_set_target(_outSurf);
			if(fill == 0) {
				DRAW_CLEAR
				BLEND_OVERRIDE;
			} else if(fill == 1)
				draw_clear(fillClr);
			
			var sx = 0;
			var sy = 0;
			
			switch(halign) {
				case fa_left :   sx = 0;				 break;
				case fa_center : sx = (dim[0] - ww) / 2; break;
				case fa_right :  sx =  dim[0] - ww;		 break;
			}
			
			switch(valign) {
				case fa_top :    sy = 0;				 break;
				case fa_center : sy = (dim[1] - hh) / 2; break;
				case fa_bottom:  sy =  dim[1] - hh;		 break;
			}
			
			draw_surface_safe(surf, sx, sy);
			BLEND_NORMAL;
			surface_reset_target();
		}
		
		return _outSurf;
	}
}