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SoftLK-lib/examples/efelder/gui.c
Captain4LK 20b94a32f9 Rework font system 
* Fonts not loaded automatically anymore, load with SLK_draw_[DRAWTYPE]_load_font(path)
* Changed included font, because of unknown license/origin
* Included some more fonts
2020-07-28 20:09:59 +02:00

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/*
Copyright (C) 2020 by Captain4LK (Lukas Holzbeierlein)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
//This code is a big mess,
//just as always with gui code
//without the use of an actual gui framework.
//External includes
#include <time.h>
#include "../../include/SLK/SLK.h"
//-------------------------------------
//Internal includes
#include "gui.h"
#include "settings.h"
#include "calculate.h"
//-------------------------------------
//#defines
#define GUI_HELP_LINES 61
#define GUI_HELP_SCROLL 14
//-------------------------------------
//Typedefs
//-------------------------------------
//Variables
static SLK_RGB_sprite *gui_top_right;
static SLK_RGB_sprite *gui_options;
static SLK_RGB_sprite *gui_help;
static SLK_RGB_sprite *gui_help_bar;
static SLK_RGB_sprite *gui_help_text;
static SLK_RGB_sprite *button_0_pressed;
static SLK_RGB_sprite *button_1_pressed;
static SLK_RGB_sprite *button_2_pressed;
static SLK_RGB_sprite *button_4_pressed; //Yes button_4
static int button_0_anim = 0;
static int button_1_anim = 0;
static int button_2_anim = 0;
static int button_4_anim = 0;
static int gui_mode;
static int can_x = 0;
static int can_y = 0;
static int scroll_y = 0;
static const int scroll_max = GUI_HELP_LINES*12-244;
static float can_scale = 1.0f;
static char text_help[GUI_HELP_LINES][36] = //only use 34 letters
{
"This program is free software: you",
"can redistribute it and/or modify ",
"it under the terms of the GNU ",
"General Public License as ",
"published by the Free Software ",
"Foundation, either version 3 of ",
"the License, or (at your option) ",
"any later version. ",
"This program is distributed in the",
"hope that it will be useful, but ",
"WITHOUT ANY WARRANTY; without even",
"the implied warranty of ",
"MERCHANTABILITY or FITNESS FOR A ",
"PARTICULAR PURPOSE. See the GNU ",
"General Public License for more ",
"details. ",
"You should have received a copy of",
"the GNU General Public License ",
"along with this program. If not, ",
"see www.gnu.org/licenses/. ",
"..................................",
"Using this program should be ",
"fairly easy, but I will try to ",
"explain everything here anyway. ",
"On the right side you should see 5",
"buttons. ",
"The first button, marked with a ",
"cogwheel acesses the options menu.",
"Here you can change the UI scale, ",
"the background color (NOTE: does ",
"apply to saved images) and the ",
"canvas dimensions (NOTE: only ",
"applies after recalculating). ",
"The second button, marked with an ",
"i acesses this text. ",
"The third button, marked with a ",
"wrench will acess the editor, once",
"it's implemented (hopefully soon).",
"The fourth button, marked with a ",
"reload symbol recalculates ",
"everything, use this after ",
"changing the layout or the canvas ",
"dimensions. ",
"The fith button, marked with a ",
"floppy disk, saves the the current",
"layout as a png image (both the ",
"electrical field and potential). ",
" ",
"If you don't have any other menu ",
"open, you can move arround the ",
"simulation. By holding down the ",
"mousewheel and moving the mouse ",
"you can move the canvas. By ",
"scrolling the mousewheel you can ",
"zoom in and out towards the mouse ",
"pointer. ",
"This text still is not finished ",
"and does not yet describe some ",
"functionalities like editing json ",
"files, the only way to edit ",
"anything currently. "
};
//-------------------------------------
//Function prototypes
//-------------------------------------
//Function implementations
void gui_init()
{
//Load assets
SLK_RGB_sprite *sheet = SLK_rgb_sprite_load("assets/about.png");
gui_top_right = SLK_rgb_sprite_create(44,323);
gui_options = SLK_rgb_sprite_create(293,324);
gui_help = SLK_rgb_sprite_create(325,324);
gui_help_bar = SLK_rgb_sprite_create(12,17);
gui_help_text = SLK_rgb_sprite_create(276,244);
button_0_pressed = SLK_rgb_sprite_create(44,44);
button_1_pressed = SLK_rgb_sprite_create(44,44);
button_2_pressed = SLK_rgb_sprite_create(44,44);
button_4_pressed = SLK_rgb_sprite_create(44,44);
SLK_rgb_sprite_copy_partial(gui_top_right,sheet,0,0,229,64,44,323);
SLK_rgb_sprite_copy_partial(gui_options,sheet,0,0,317,0,293,324);
SLK_rgb_sprite_copy_partial(gui_help,sheet,0,0,610,0,325,324);
SLK_rgb_sprite_copy_partial(gui_help_bar,sheet,0,0,273,71,12,17);
SLK_rgb_sprite_copy_partial(button_0_pressed,sheet,0,0,273,88,44,44);
SLK_rgb_sprite_copy_partial(button_1_pressed,sheet,0,0,273,136,44,44);
SLK_rgb_sprite_copy_partial(button_2_pressed,sheet,0,0,273,184,44,44);
SLK_rgb_sprite_copy_partial(button_4_pressed,sheet,0,0,273,280,44,44);
SLK_rgb_sprite_destroy(sheet);
//Setup layers
int width_l,height_l;
SLK_layer_get_size(5,&width_l,&height_l);
SLK_layer_set_size(0,width_l/gui_scale,height_l/gui_scale);
SLK_layer_set_scale(0,gui_scale);
SLK_layer_set_pos(0,0,0);
SLK_layer_set_size(1,canvas_width,canvas_height);
SLK_layer_set_pos(1,can_x,can_y);
SLK_layer_set_scale(1,can_scale);
SLK_layer_set_size(2,canvas_width,canvas_height);
SLK_layer_set_pos(2,can_x,can_y);
SLK_layer_set_scale(2,can_scale);
SLK_layer_set_size(3,canvas_width,canvas_height);
SLK_layer_set_pos(3,can_x,can_y);
SLK_layer_set_scale(3,can_scale);
SLK_layer_set_current(0);
SLK_draw_rgb_set_clear_color(SLK_color_create(0,0,0,0));
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
//Draw text once
int text_start = scroll_y/12;
int text_start_pos = (text_start*12)-scroll_y;
memset(gui_help_text->data,0,sizeof(SLK_Color)*gui_help_text->height*gui_help_text->width);
SLK_draw_rgb_set_target(gui_help_text);
for(int i = text_start;i<text_start+22;i++)
{
if(i>=0&&i<GUI_HELP_LINES)
SLK_draw_rgb_string(0,text_start_pos,1,text_help[i],SLK_color_create(222,238,214,255));
text_start_pos+=12;
}
SLK_draw_rgb_set_target(NULL);
}
void gui_update()
{
int width,height;
SLK_layer_get_size(0,&width,&height);
switch(gui_mode)
{
case 0: //electrical fields
case 1: //electric potential
if(SLK_mouse_down(SLK_BUTTON_MIDDLE))
{
int x,y;
SLK_mouse_get_relative_pos(&x,&y);
can_x+=x;
can_y+=y;
SLK_layer_set_pos(1,can_x,can_y);
SLK_layer_set_pos(2,can_x,can_y);
SLK_layer_set_pos(3,can_x,can_y);
}
if(SLK_mouse_pressed(SLK_BUTTON_LEFT))
{
int x,y;
SLK_mouse_get_layer_pos(0,&x,&y);
if(x>=width-44&&x<width)
{
if(y>=24&&y<68)
{
button_0_anim = 10;
gui_mode = 2;
}
else if(y>=72&&y<116)
{
button_1_anim = 10;
gui_mode = 3;
}
else if(y>=120&&y<164)
{
button_2_anim = 10;
}
else if(y>=168&&y<212)
{
calculate();
}
else if(y>=216&&y<260)
{
button_4_anim = 10;
SLK_Layer *layer0, *layer1, *layer2;
char path[256] = "";
layer0 = SLK_layer_get(1);
layer1 = SLK_layer_get(2);
layer2 = SLK_layer_get(3);
SLK_RGB_sprite *sprite_to_save = SLK_rgb_sprite_create(layer0->type_1.target->width,layer0->type_1.target->height);
SLK_draw_rgb_set_target(sprite_to_save);
SLK_draw_rgb_set_clear_color(SLK_color_create(0,0,0,0));
SLK_draw_rgb_clear();
SLK_rgb_sprite_copy(sprite_to_save,layer1->type_1.target);
SLK_draw_rgb_sprite(layer0->type_1.target,0,0);
sprintf(path,"feldlinien_%ld.png",time(NULL));
SLK_rgb_sprite_save(path,sprite_to_save);
SLK_draw_rgb_clear();
SLK_rgb_sprite_copy(sprite_to_save,layer2->type_1.target);
SLK_draw_rgb_sprite(layer0->type_1.target,0,0);
sprintf(path,"potential_%ld.png",time(NULL));
SLK_rgb_sprite_save(path,sprite_to_save);
SLK_draw_rgb_set_target(NULL);
SLK_rgb_sprite_destroy(sprite_to_save);
}
}
}
int wheel = SLK_mouse_wheel_get_scroll();
if(wheel<0)
{
int mx,my;
SLK_mouse_get_pos(&mx,&my);
float x = ((float)mx-(float)can_x)/can_scale;
float y = ((float)my-(float)can_y)/can_scale;
float scale_change = -can_scale*0.15f;
can_scale+=can_scale*0.15f;
can_x+=x*scale_change;
can_y+=y*scale_change;
SLK_layer_set_pos(1,can_x,can_y);
SLK_layer_set_pos(2,can_x,can_y);
SLK_layer_set_pos(3,can_x,can_y);
SLK_layer_set_scale(1,can_scale);
SLK_layer_set_scale(2,can_scale);
SLK_layer_set_scale(3,can_scale);
}
else if(wheel>0)
{
int mx,my;
SLK_mouse_get_pos(&mx,&my);
float x = ((float)mx-(float)can_x)/can_scale;
float y = ((float)my-(float)can_y)/can_scale;
float scale_change = can_scale*0.15f;
can_scale-=can_scale*0.15f;
can_x+=x*scale_change;
can_y+=y*scale_change;
SLK_layer_set_pos(1,can_x,can_y);
SLK_layer_set_pos(2,can_x,can_y);
SLK_layer_set_pos(3,can_x,can_y);
SLK_layer_set_scale(1,can_scale);
SLK_layer_set_scale(2,can_scale);
SLK_layer_set_scale(3,can_scale);
}
break;
case 2: //Options
{
int pos_x = (width-gui_options->width)/2;
int pos_y = (height-gui_options->height)/2;
if(SLK_mouse_pressed(SLK_BUTTON_LEFT))
{
int x,y;
SLK_mouse_get_layer_pos(0,&x,&y);
if(x>pos_x+86&&x<pos_x+103)
{
if(y>pos_y+78&&y<pos_y+95) //Button scale minus
{
gui_scale-=0.1f;
int width_l,height_l;
SLK_layer_get_size(5,&width_l,&height_l);
SLK_layer_set_size(0,width_l/gui_scale,height_l/gui_scale);
SLK_layer_set_scale(0,gui_scale);
SLK_layer_set_pos(0,0,0);
SLK_layer_set_current(0);
SLK_draw_rgb_set_clear_color(SLK_color_create(0,0,0,0));
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
else if(y>pos_y+142&&y<pos_y+159) //Button red minus
{
background_color.r-=5;
SLK_layer_set_current(5);
SLK_draw_rgb_set_clear_color(background_color);
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
else if(y>pos_y+174&&y<pos_y+191) //Button green minus
{
background_color.g-=5;
SLK_layer_set_current(5);
SLK_draw_rgb_set_clear_color(background_color);
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
else if(y>pos_y+206&&y<pos_y+223) //Button blue minus
{
background_color.b-=5;
SLK_layer_set_current(5);
SLK_draw_rgb_set_clear_color(background_color);
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
else if(y>pos_y+264&&y<pos_y+281) //Button width minus
{
canvas_width-=100;
}
else if(y>pos_y+296&&y<pos_y+313) //Button height minus
{
canvas_height-=100;
}
}
else if(x>pos_x+210&&x<pos_x+227)
{
if(y>pos_y+78&&y<pos_y+95) //Button scale plus
{
gui_scale+=0.1f;
int width_l,height_l;
SLK_layer_get_size(5,&width_l,&height_l);
SLK_layer_set_size(0,width_l/gui_scale,height_l/gui_scale);
SLK_layer_set_scale(0,gui_scale);
SLK_layer_set_pos(0,0,0);
SLK_layer_set_current(0);
SLK_draw_rgb_set_clear_color(SLK_color_create(0,0,0,0));
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
else if(y>pos_y+142&&y<pos_y+159) //Button red plus
{
background_color.r+=5;
SLK_layer_set_current(5);
SLK_draw_rgb_set_clear_color(background_color);
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
else if(y>pos_y+174&&y<pos_y+191) //Button green plus
{
background_color.g+=5;
SLK_layer_set_current(5);
SLK_draw_rgb_set_clear_color(background_color);
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
else if(y>pos_y+206&&y<pos_y+223) //Button blue plus
{
background_color.b+=5;
SLK_layer_set_current(5);
SLK_draw_rgb_set_clear_color(background_color);
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
else if(y>pos_y+264&&y<pos_y+281) //Button width plus
{
canvas_width+=100;
}
else if(y>pos_y+296&&y<pos_y+313) //Button height plus
{
canvas_height+=100;
}
}
//Button close
if(x>pos_x+245&&x<pos_x+286&&y>pos_y+8&&y<pos_y+56)
{
gui_mode = 0;
SLK_layer_set_current(0);
SLK_draw_rgb_set_clear_color(SLK_color_create(0,0,0,0));
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
}
}
break;
case 3: //help
{
int pos_x = (width-gui_help->width)/2;
int pos_y = (height-gui_help->height)/2;
if(SLK_mouse_pressed(SLK_BUTTON_LEFT))
{
int x,y;
SLK_mouse_get_layer_pos(0,&x,&y);
if(x>pos_x+277&&x<pos_x+317&&y>pos_y+8&&y<pos_y+56)
{
gui_mode = 0;
SLK_layer_set_current(0);
SLK_draw_rgb_set_clear_color(SLK_color_create(0,0,0,0));
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
}
int wheel = SLK_mouse_wheel_get_scroll();
int redraw = 0;
if(wheel>0)
{
//Up
scroll_y-=GUI_HELP_SCROLL;
redraw = 1;
}
else if(wheel<0)
{
//Down
scroll_y+=GUI_HELP_SCROLL;
redraw = 1;
}
if(scroll_y>scroll_max)
scroll_y = scroll_max;
if(scroll_y<0)
scroll_y = 0;
if(redraw)
{
int text_start = (scroll_y/12)-1;
int text_start_pos = (text_start*12)-scroll_y;
memset(gui_help_text->data,0,sizeof(SLK_Color)*gui_help_text->height*gui_help_text->width);
SLK_draw_rgb_set_target(gui_help_text);
for(int i = text_start;i<text_start+22;i++)
{
if(i>=0&&i<GUI_HELP_LINES)
SLK_draw_rgb_string(0,text_start_pos,1,text_help[i],SLK_color_create(222,238,214,255));
text_start_pos+=12;
}
SLK_draw_rgb_set_target(NULL);
}
}
break;
}
if(SLK_key_pressed(SLK_KEY_M))
{
if(mode)
{
mode = 0;
SLK_layer_activate(2,0);
SLK_layer_activate(3,1);
}
else
{
mode = 1;
SLK_layer_activate(2,1);
SLK_layer_activate(3,0);
}
}
}
void gui_draw()
{
if(SLK_layer_get_resized(5))
{
int width_l,height_l;
SLK_layer_get_size(5,&width_l,&height_l);
SLK_layer_set_current(5);
SLK_draw_rgb_set_clear_color(background_color);
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
SLK_layer_set_size(0,width_l/gui_scale,height_l/gui_scale);
SLK_layer_set_scale(0,gui_scale);
SLK_layer_set_pos(0,0,0);
SLK_layer_set_current(0);
SLK_draw_rgb_set_clear_color(SLK_color_create(0,0,0,0));
SLK_draw_rgb_clear();
SLK_draw_rgb_set_changed(1);
}
SLK_layer_set_current(0);
SLK_draw_rgb_set_changed(1);
int width,height;
SLK_layer_get_size(0,&width,&height);
//Gets always drawn
SLK_draw_rgb_sprite(gui_top_right,width-44,0);
if(button_0_anim)
{
button_0_anim--;
SLK_draw_rgb_sprite(button_0_pressed,width-44,24);
}
if(button_1_anim)
{
button_1_anim--;
SLK_draw_rgb_sprite(button_1_pressed,width-44,72);
}
if(button_2_anim)
{
button_2_anim--;
SLK_draw_rgb_sprite(button_2_pressed,width-44,120);
}
if(button_4_anim)
{
button_4_anim--;
SLK_draw_rgb_sprite(button_4_pressed,width-44,216);
}
//Modes:
//0,1: unused/default
//2: settings
//3: help
switch(gui_mode)
{
case 2:
{
int pos_x = (width-gui_options->width)/2;
int pos_y = (height-gui_options->height)/2;
SLK_draw_rgb_sprite(gui_options,pos_x,pos_y);
char temp_str[256] = "";
sprintf(temp_str,"%03f",gui_scale);
SLK_draw_rgb_string(pos_x+128,pos_y+83,1,temp_str,SLK_color_create(203,219,252,255));
sprintf(temp_str,"%03d",background_color.r);
SLK_draw_rgb_string(pos_x+144,pos_y+147,1,temp_str,SLK_color_create(203,219,252,255));
sprintf(temp_str,"%03d",background_color.g);
SLK_draw_rgb_string(pos_x+144,pos_y+179,1,temp_str,SLK_color_create(203,219,252,255));
sprintf(temp_str,"%03d",background_color.b);
SLK_draw_rgb_string(pos_x+144,pos_y+211,1,temp_str,SLK_color_create(203,219,252,255));
sprintf(temp_str,"%05d",canvas_width);
SLK_draw_rgb_string(pos_x+136,pos_y+269,1,temp_str,SLK_color_create(203,219,252,255));
sprintf(temp_str,"%05d",canvas_height);
SLK_draw_rgb_string(pos_x+136,pos_y+301,1,temp_str,SLK_color_create(203,219,252,255));
}
break;
case 3:
{
int pos_x = (width-gui_help->width)/2;
int pos_y = (height-gui_help->height)/2;
SLK_draw_rgb_sprite(gui_help,pos_x,pos_y);
SLK_draw_rgb_sprite(gui_help_text,pos_x+6,pos_y+74);
int y = (int)(((float)(scroll_y)/(float)(scroll_max))*178.0f);
SLK_draw_rgb_sprite(gui_help_bar,289+pos_x,pos_y+y+99);
}
break;
}
}
#undef GUI_HELP_LINES
#undef GUI_HELP_SCROLL
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