Window icons; application launcher; a calculator as an application ex…

…ample

neutron.nbuild

@@ -16,6 +16,8 @@ src/drivers/pit.c
 src/drivers/ps2.c
 src/drivers/acpi.c
 src/drivers/ps2_kbd.c
+
+src/apps/calculator/calculator.c
 .fs
 build/quark.bin>quark
 neutron.nbuild>nbuild

src/apps/README.txt

@@ -0,0 +1 @@
+This folder contains the built-in apps

src/apps/app.h

@@ -0,0 +1,19 @@
+#ifndef APP_H
+#define APP_H
+
+#include "../stdlib.h"
+
+typedef struct {
+    //The entry point for the application
+    void(*entry_point)(void);
+    //The icon of the application
+    uint8_t* icon;
+    //The name of the application
+    char* name;
+    //The version of the application
+    uint16_t ver_major;
+    uint16_t ver_minor;
+    uint16_t ver_patch;
+} app_t;
+
+#endif

src/apps/calculator/calculator.c

@@ -0,0 +1,180 @@
+//Neutron Project
+//Calculator - one of the built-in apps
+
+#include "./calculator.h"
+#include "../app.h"
+#include "../../gui/gui.h"
+#include "../../drivers/gfx.h"
+
+color32_t calculator_display_bg = COLOR32(255, 128, 128, 128);
+color32_t calculator_button_bg = COLOR32(255, 128, 128, 128);
+color32_t calculator_button_unused_bg = COLOR32(255, 64, 64, 64);
+color32_t calculator_equal_bg = COLOR32(255, 255, 128, 0);
+
+control_t* calculator_label_result;
+
+uint8_t calculator_state;
+uint8_t calculator_operation;
+int64_t calculator_x;
+int64_t calculator_y;
+
+/*
+ * Display the result on the screen
+ */
+void calculator_display_result(char* result){
+    //Calculate the bounds of the text
+    p2d_t bounds = gfx_text_bounds(result);
+    //Set the text
+    memcpy(((control_ext_label_t*)calculator_label_result->extended)->text, result, strlen(result) + 1);
+    //Set the position
+    calculator_label_result->position.x = 86 - bounds.x;
+    //Set the size
+    calculator_label_result->size = bounds;
+}
+
+/*
+ * Any button was pressed on the calculator
+ */
+void calculator_pressed(ui_event_args_t* args){
+    if(args->type == GUI_EVENT_CLICK){
+        //Calculate the click position relative to the button
+        p2d_t click_pos = (p2d_t){.x = args->mouse_pos.x - ((window_t*)args->win)->position.x - ((control_t*)args->control)->position.x - 1,
+                                  .y = args->mouse_pos.y - ((window_t*)args->win)->position.y - ((control_t*)args->control)->position.y - 13};
+        //If the click position is sane
+        if(click_pos.x <= 87 && click_pos.y <= 87){
+            //Calculate X and Y button index
+            uint8_t btn_x = click_pos.x / 22;
+            uint8_t btn_y = click_pos.y / 22;
+
+            //3rd column = operators
+            if(btn_x == 3){
+                calculator_operation = btn_y;
+                //Change the state
+                calculator_state = CALCULATOR_STATE_ENTERING_Y;
+            }
+            //2nd column 3rd row = "="
+            else if(btn_x == 2 && btn_y == 3){
+                //Store the result of operation between X and Y in Y
+                if(calculator_operation == CALCULATOR_OPERATION_ADDITION)
+                    calculator_x += calculator_y;
+                else if(calculator_operation == CALCULATOR_OPERATION_SUBTRACTION)
+                    calculator_x -= calculator_y;
+                else if(calculator_operation == CALCULATOR_OPERATION_MULTIPLICATION)
+                    calculator_x *= calculator_y;
+                else if(calculator_operation == CALCULATOR_OPERATION_DIVISION)
+                    calculator_x /= calculator_y;
+                //Reset the state to "entering X"
+                calculator_state = CALCULATOR_STATE_ENTERING_X;
+                //Reset Y
+                calculator_y = 0;
+                //Display the X contents
+                char temp[20];
+                calculator_display_result(sprintu(temp, calculator_x, 1));
+            }
+            //1st column 3rd row = reset
+            else if(btn_x == 1 && btn_y == 3){
+                calculator_state = CALCULATOR_STATE_ENTERING_X;
+                calculator_x = 0;
+                calculator_y = 0;
+                calculator_display_result("0");
+            }
+            else {
+                //Decode the digit
+                uint8_t digit = 0;
+                if(btn_y == 0)
+                    digit = btn_x + 7;
+                else if(btn_y == 1)
+                    digit = btn_x + 4;
+                else if(btn_y == 2)
+                    digit = btn_x + 1;
+                else if(btn_y == 0)
+                    digit = 0;
+                //Depending on the state, either append that digit to
+                //  and display contents of the X or Y register
+                char temp[20];
+                if(calculator_state == CALCULATOR_STATE_ENTERING_X){
+                    calculator_x *= 10;
+                    calculator_x += digit;
+                    calculator_display_result(sprintu(temp, calculator_x, 1));
+                } else {
+                    calculator_y *= 10;
+                    calculator_y += digit;
+                    calculator_display_result(sprintu(temp, calculator_y, 1));
+                }
+            }
+        }
+    }
+}
+
+/*
+ * The entry point for the calculator
+ */
+void calculator_entry(void){
+    //Create the window
+    window_t* window = 
+    gui_create_window("Calc", calculator_icon_8, GUI_WIN_FLAGS_STANDARD, (p2d_t){.x = 100, .y = 100}, (p2d_t){.x = 90, .y = 127}, NULL);
+    //Create a progress bar mimicking the display
+    gui_create_progress_bar(window, (p2d_t){.x = 1, .y = 0}, (p2d_t){86, 25}, calculator_display_bg, COLOR32(0, 0, 0, 0),
+        COLOR32(255, 0, 0, 0), 100, 0, NULL);
+    //Create the result label
+    calculator_label_result = 
+    gui_create_label(window, (p2d_t){.x = 0, .y = 9}, (p2d_t){.x = 0, .y = 0}, "                   ",
+        COLOR32(255, 255, 255, 255), COLOR32(0, 0, 0, 0), NULL);
+    calculator_display_result("0");
+    //Create one big button that really handles the events
+    gui_create_button(window, (p2d_t){.x = 1, .y = 27}, (p2d_t){.x = 87, .y = 87}, "",
+        COLOR32(0, 0, 0, 0), gui_get_color_scheme()->win_bg, gui_get_color_scheme()->win_bg, gui_get_color_scheme()->win_bg, calculator_pressed);
+
+
+    //Create the "7" button
+    gui_create_button(window, (p2d_t){.x = 1, .y = 27}, (p2d_t){.x = 20, .y = 20}, "7",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "8" button
+    gui_create_button(window, (p2d_t){.x = 23, .y = 27}, (p2d_t){.x = 20, .y = 20}, "8",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "9" button
+    gui_create_button(window, (p2d_t){.x = 45, .y = 27}, (p2d_t){.x = 20, .y = 20}, "9",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "+" button
+    gui_create_button(window, (p2d_t){.x = 67, .y = 27}, (p2d_t){.x = 20, .y = 20}, "+",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+
+    //Create the "4" button
+    gui_create_button(window, (p2d_t){.x = 1, .y = 49}, (p2d_t){.x = 20, .y = 20}, "4",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "5" button
+    gui_create_button(window, (p2d_t){.x = 23, .y = 49}, (p2d_t){.x = 20, .y = 20}, "5",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "6" button
+    gui_create_button(window, (p2d_t){.x = 45, .y = 49}, (p2d_t){.x = 20, .y = 20}, "6",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "-" button
+    gui_create_button(window, (p2d_t){.x = 67, .y = 49}, (p2d_t){.x = 20, .y = 20}, "-",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+
+    //Create the "1" button
+    gui_create_button(window, (p2d_t){.x = 1, .y = 71}, (p2d_t){.x = 20, .y = 20}, "1",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "2" button
+    gui_create_button(window, (p2d_t){.x = 23, .y = 71}, (p2d_t){.x = 20, .y = 20}, "2",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "3" button
+    gui_create_button(window, (p2d_t){.x = 45, .y = 71}, (p2d_t){.x = 20, .y = 20}, "3",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "*" button
+    gui_create_button(window, (p2d_t){.x = 67, .y = 71}, (p2d_t){.x = 20, .y = 20}, "*",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+
+    //Create the "0" button
+    gui_create_button(window, (p2d_t){.x = 1, .y = 93}, (p2d_t){.x = 20, .y = 20}, "0",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "AC" button
+    gui_create_button(window, (p2d_t){.x = 23, .y = 93}, (p2d_t){.x = 20, .y = 20}, "AC",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "=" button
+    gui_create_button(window, (p2d_t){.x = 45, .y = 93}, (p2d_t){.x = 20, .y = 20}, "=",
+        COLOR32(255, 255, 255, 255), calculator_equal_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+    //Create the "/" button
+    gui_create_button(window, (p2d_t){.x = 67, .y = 93}, (p2d_t){.x = 20, .y = 20}, "/",
+        COLOR32(255, 255, 255, 255), calculator_button_bg, COLOR32(0, 0, 0, 0), COLOR32(255, 0, 0, 0), NULL);
+}