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sudoku-ocr-gui.c
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#include <gtk/gtk.h>
#include <pthread.h>
#include "grid_processing.h"
#include "grid_splitting.h"
#include "image.h"
#include "image_processing.h"
#include "perspective_correction.h"
#include "result_network.h"
#include "rotation.h"
#include "solver.h"
#define IMAGE_SIZE 500
#define VERBOSE_MODE 0
#define VERBOSE_PATH NULL
#define ACCENT_COLOR \
{ \
13, 137, 224, 1 \
}
#define TRANSPARENT \
{ \
0, 0, 0, 0 \
}
struct StepIndicators
{
int current_step;
GtkWidget *step_1_indicator;
GtkWidget *step_2_indicator;
GtkWidget *step_3_indicator;
GtkWidget *step_4_indicator;
GtkWidget *step_5_indicator;
GtkWidget *step_6_indicator;
};
typedef struct StepIndicators StepIndicators;
struct Controls
{
GtkScale *rotation_scale;
GtkButton *save_button;
GtkButton *open_button;
GtkButton *prev_button;
GtkButton *cancel_image_button;
GtkButton *confirm_image_button;
GtkButton *image_rotation_done_button;
GtkButton *confirm_crop_button;
GtkButton *correction_done_button;
GtkToggleButton *hide_grid_button;
GtkToggleButton *hide_image_button;
GtkFileChooserButton *file_chooser_button;
GtkEventBox *crop_event_box;
};
typedef struct Controls Controls;
struct Page
{
GtkViewport *container;
GtkDrawingArea *image;
GtkLabel *label;
};
typedef struct Page Page;
struct Pages
{
char *current_page;
Page *page1;
Page *page2;
Page *page3;
Page *page4;
Page *page5;
Page *page6;
};
typedef struct Pages Pages;
struct Images
{
Image *current_image;
Image *clean;
Image *mask;
Image *image;
Image *image_rotated;
Image *image_rotated_clean;
Image *image_rotated_cropped;
Image *image_solved;
gdouble current_rotation;
gboolean is_rotated;
gboolean is_loaded;
gboolean is_displayed;
gboolean is_grid_detected;
gboolean is_perspective_corrected;
gboolean is_solved;
square *grid_square;
gint display_size;
GtkDrawingArea *current_container;
gboolean editing_digits;
GtkLabel *current_label;
};
typedef struct Images Images;
struct MainWindow
{
GtkWidget *window;
GtkStack *stack;
GtkGrid *sudoku_labels_grid;
StepIndicators *step_indicators;
Controls *controls;
Pages *pages;
Images *images;
gboolean cropping;
int **grid;
};
typedef struct MainWindow MainWindow;
void free_used_images(MainWindow *main_window)
{
if (main_window->images->is_loaded)
{
free_Image(main_window->images->mask);
free_Image(main_window->images->image);
free_Image(main_window->images->clean);
}
if (main_window->images->is_rotated)
{
free_Image(main_window->images->image_rotated);
}
if (main_window->images->is_grid_detected)
{
free_Image(main_window->images->image_rotated_clean);
}
if (main_window->images->is_perspective_corrected)
{
free_Image(main_window->images->image_rotated_cropped);
free(main_window->images->grid_square);
}
if (main_window->images->is_solved)
{
free_Image(main_window->images->image_solved);
}
}
/*
* Images Display
*/
void draw_image_and_square(
GtkDrawingArea *drawing_area, cairo_t *cr, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
GdkPixbuf *pixbuf = image_to_pixbuf(main_window->images->current_image);
gint width = gtk_widget_get_allocated_width(GTK_WIDGET(drawing_area));
gint height = gtk_widget_get_allocated_height(GTK_WIDGET(drawing_area));
gint image_width = main_window->images->current_image->width;
gint image_height = main_window->images->current_image->height;
gdouble scale_x = (gdouble)width / image_width;
gdouble scale_y = (gdouble)height / image_height;
gdouble scale = MIN(scale_x, scale_y);
gint scaled_width = image_width * scale;
gint scaled_height = image_height * scale;
gint scaled_x = (width - scaled_width) / 2;
gint scaled_y = (height - scaled_height) / 2;
pixbuf = gdk_pixbuf_scale_simple(
pixbuf, scaled_width, scaled_height, GDK_INTERP_BILINEAR);
cairo_surface_t *surface
= gdk_cairo_surface_create_from_pixbuf(pixbuf, 1, NULL);
square *grid_square = main_window->images->grid_square;
cairo_set_source_surface(cr, surface, scaled_x, scaled_y);
cairo_rectangle(cr, scaled_x, scaled_y, scaled_width, scaled_height);
cairo_fill(cr);
main_window->images->display_size
= scaled_width > scaled_height ? scaled_height : scaled_width;
// Black filter on cropped part
cairo_set_source_rgba(cr, 0, 0, 0, 0.5);
cairo_rectangle(cr, scaled_x, scaled_y, scaled_width, scaled_height);
cairo_move_to(cr, scaled_x + grid_square->c1.x * scale,
scaled_y + grid_square->c1.y * scale);
cairo_line_to(cr, scaled_x + grid_square->c2.x * scale,
scaled_y + grid_square->c2.y * scale);
cairo_line_to(cr, scaled_x + grid_square->c3.x * scale,
scaled_y + grid_square->c3.y * scale);
cairo_line_to(cr, scaled_x + grid_square->c4.x * scale,
scaled_y + grid_square->c4.y * scale);
cairo_line_to(cr, scaled_x + grid_square->c1.x * scale,
scaled_y + grid_square->c1.y * scale);
cairo_set_fill_rule(cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_fill(cr);
// Black Square
cairo_set_fill_rule(cr, CAIRO_FILL_RULE_WINDING);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_set_line_width(cr, 4);
cairo_move_to(cr, scaled_x + grid_square->c1.x * scale,
scaled_y + grid_square->c1.y * scale);
cairo_line_to(cr, scaled_x + grid_square->c2.x * scale,
scaled_y + grid_square->c2.y * scale);
cairo_line_to(cr, scaled_x + grid_square->c3.x * scale,
scaled_y + grid_square->c3.y * scale);
cairo_line_to(cr, scaled_x + grid_square->c4.x * scale,
scaled_y + grid_square->c4.y * scale);
cairo_line_to(cr, scaled_x + grid_square->c1.x * scale,
scaled_y + grid_square->c1.y * scale);
cairo_stroke(cr);
// Handle1
cairo_set_source_rgb(cr, 255, 255, 255);
cairo_arc(cr, scaled_x + grid_square->c1.x * scale,
scaled_y + grid_square->c1.y * scale,
main_window->images->display_size / 50, 0, 2 * G_PI);
cairo_fill(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_arc(cr, scaled_x + grid_square->c1.x * scale,
scaled_y + grid_square->c1.y * scale,
main_window->images->display_size / 50, 0, 2 * G_PI);
cairo_set_line_width(cr, 2);
cairo_stroke(cr);
// Handle2
cairo_set_source_rgb(cr, 255, 255, 255);
cairo_arc(cr, scaled_x + grid_square->c2.x * scale,
scaled_y + grid_square->c2.y * scale,
main_window->images->display_size / 50, 0, 2 * G_PI);
cairo_fill(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_arc(cr, scaled_x + grid_square->c2.x * scale,
scaled_y + grid_square->c2.y * scale,
main_window->images->display_size / 50, 0, 2 * G_PI);
cairo_set_line_width(cr, 2);
cairo_stroke(cr);
// Handle3
cairo_set_source_rgb(cr, 255, 255, 255);
cairo_arc(cr, scaled_x + grid_square->c3.x * scale,
scaled_y + grid_square->c3.y * scale,
main_window->images->display_size / 50, 0, 2 * G_PI);
cairo_fill(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_arc(cr, scaled_x + grid_square->c3.x * scale,
scaled_y + grid_square->c3.y * scale,
main_window->images->display_size / 50, 0, 2 * G_PI);
cairo_set_line_width(cr, 2);
cairo_stroke(cr);
// Handle4
cairo_set_source_rgb(cr, 255, 255, 255);
cairo_arc(cr, scaled_x + grid_square->c4.x * scale,
scaled_y + grid_square->c4.y * scale,
main_window->images->display_size / 50, 0, 2 * G_PI);
cairo_fill(cr);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_arc(cr, scaled_x + grid_square->c4.x * scale,
scaled_y + grid_square->c4.y * scale,
main_window->images->display_size / 50, 0, 2 * G_PI);
cairo_set_line_width(cr, 2);
cairo_stroke(cr);
cairo_surface_destroy(surface);
g_object_unref(pixbuf);
}
void draw_image_and_grid(
GtkDrawingArea *drawing_area, cairo_t *cr, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
GdkPixbuf *pixbuf = image_to_pixbuf(main_window->images->current_image);
gint width = gtk_widget_get_allocated_width(GTK_WIDGET(drawing_area));
gint height = gtk_widget_get_allocated_height(GTK_WIDGET(drawing_area));
gint image_width = main_window->images->current_image->width;
gint image_height = main_window->images->current_image->height;
gdouble scale_x = (gdouble)width / image_width;
gdouble scale_y = (gdouble)height / image_height;
gdouble scale = MIN(scale_x, scale_y);
gint scaled_width = image_width * scale;
gint scaled_height = image_height * scale;
gint scaled_x = (width - scaled_width) / 2;
gint scaled_y = (height - scaled_height) / 2;
pixbuf = gdk_pixbuf_scale_simple(
pixbuf, scaled_width, scaled_height, GDK_INTERP_BILINEAR);
cairo_surface_t *surface
= gdk_cairo_surface_create_from_pixbuf(pixbuf, 1, NULL);
cairo_set_source_surface(cr, surface, scaled_x, scaled_y);
cairo_rectangle(cr, scaled_x, scaled_y, scaled_width, scaled_height);
main_window->images->display_size
= scaled_width > scaled_height ? scaled_height : scaled_width;
gtk_widget_set_margin_start(
GTK_WIDGET(main_window->sudoku_labels_grid), scaled_x + 20);
gtk_widget_set_margin_top(
GTK_WIDGET(main_window->sudoku_labels_grid), scaled_y + 20);
for (int i = 0; i < 9; i++)
{
for (int j = 0; j < 9; j++)
{
GtkLabel *label = gtk_bin_get_child(GTK_EVENT_BOX(
gtk_grid_get_child_at(main_window->sudoku_labels_grid, i, j)));
gtk_widget_set_size_request(GTK_WIDGET(label),
main_window->images->display_size / 9,
main_window->images->display_size / 9);
gchar label_text[100];
g_snprintf(label_text, 100, "%ix%i", i, j);
gtk_widget_set_name(GTK_WIDGET(label), label_text);
if (main_window->grid[i][j] != 0)
{
g_snprintf(label_text, 100,
"<span font='%d' weight='bold' color='red'>%d</span>",
main_window->images->display_size / 18,
main_window->grid[i][j]);
gtk_label_set_markup(label, label_text);
}
else
{
gtk_label_set_text(label, "");
}
}
}
cairo_fill(cr);
cairo_surface_destroy(surface);
g_object_unref(pixbuf);
}
void draw_image(GtkDrawingArea *drawing_area, cairo_t *cr, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
GdkPixbuf *pixbuf = image_to_pixbuf(main_window->images->current_image);
gint width = gtk_widget_get_allocated_width(GTK_WIDGET(drawing_area));
gint height = gtk_widget_get_allocated_height(GTK_WIDGET(drawing_area));
gint image_width = main_window->images->current_image->width;
gint image_height = main_window->images->current_image->height;
gdouble scale_x = (gdouble)width / image_width;
gdouble scale_y = (gdouble)height / image_height;
gdouble scale = MIN(scale_x, scale_y);
gint scaled_width = image_width * scale;
gint scaled_height = image_height * scale;
gint scaled_x = (width - scaled_width) / 2;
gint scaled_y = (height - scaled_height) / 2;
pixbuf = gdk_pixbuf_scale_simple(
pixbuf, scaled_width, scaled_height, GDK_INTERP_BILINEAR);
cairo_surface_t *surface
= gdk_cairo_surface_create_from_pixbuf(pixbuf, 1, NULL);
cairo_set_source_surface(cr, surface, scaled_x, scaled_y);
cairo_rectangle(cr, scaled_x, scaled_y, scaled_width, scaled_height);
main_window->images->display_size
= scaled_width > scaled_height ? scaled_height : scaled_width;
cairo_fill(cr);
cairo_surface_destroy(surface);
g_object_unref(pixbuf);
}
void display_image(
GtkDrawingArea *image_container, Image *image, MainWindow *main_window)
{
*main_window->images->current_container = *image_container;
if (main_window->images->is_displayed)
free_Image(main_window->images->current_image);
main_window->images->display_size = IMAGE_SIZE;
main_window->images->is_displayed = TRUE;
*main_window->images->current_image = clone_image(image);
gtk_widget_queue_draw(GTK_WIDGET(image_container));
}
/*
* Pages and steps
*/
void set_page(MainWindow *main_window, gchar *page)
{
main_window->pages->current_page = page;
gtk_stack_set_visible_child_name(main_window->stack, page);
}
void set_step(StepIndicators *step_indicators, int step_number)
{
step_indicators->current_step = step_number;
gtk_widget_set_opacity(step_indicators->step_1_indicator, 0.5);
gtk_widget_set_opacity(step_indicators->step_2_indicator, 0.5);
gtk_widget_set_opacity(step_indicators->step_3_indicator, 0.5);
gtk_widget_set_opacity(step_indicators->step_4_indicator, 0.5);
gtk_widget_set_opacity(step_indicators->step_5_indicator, 0.5);
gtk_widget_set_opacity(step_indicators->step_6_indicator, 0.5);
switch (step_number)
{
case 1:
gtk_widget_set_opacity(step_indicators->step_1_indicator, 1.0);
break;
case 2:
gtk_widget_set_opacity(step_indicators->step_2_indicator, 1.0);
break;
case 3:
gtk_widget_set_opacity(step_indicators->step_3_indicator, 1.0);
break;
case 4:
gtk_widget_set_opacity(step_indicators->step_4_indicator, 1.0);
break;
case 5:
gtk_widget_set_opacity(step_indicators->step_5_indicator, 1.0);
break;
case 6:
gtk_widget_set_opacity(step_indicators->step_6_indicator, 1.0);
break;
}
}
/*
* Button states
*/
void set_button_to_load(GtkButton *button)
{
gtk_widget_set_sensitive(GTK_WIDGET(button), FALSE);
GtkSpinner *spinner = GTK_SPINNER(gtk_spinner_new());
GtkWidget *child = gtk_bin_get_child(GTK_BIN(button));
if (child)
gtk_container_remove(GTK_CONTAINER(button), child);
gtk_container_add(GTK_CONTAINER(button), GTK_WIDGET(spinner));
gtk_widget_show(GTK_WIDGET(spinner));
gtk_spinner_start(spinner);
}
void set_button_to_label(GtkButton *button, gchar *text)
{
GtkLabel *label = GTK_LABEL(gtk_label_new(""));
gtk_label_set_markup(label, text);
GtkWidget *child = gtk_bin_get_child(GTK_BIN(button));
if (child)
gtk_container_remove(GTK_CONTAINER(button), child);
gtk_container_add(GTK_CONTAINER(button), GTK_WIDGET(label));
gtk_widget_show(GTK_WIDGET(label));
gtk_widget_set_sensitive(GTK_WIDGET(button), TRUE);
}
/*
* File Manipulations
*/
void save_current_image(GtkWidget *_, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
if (main_window->step_indicators->current_step == 1)
{
return;
}
Image *image = main_window->images->current_image;
GtkWidget *dialog;
GtkFileChooser *chooser;
GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_SAVE;
gint res;
dialog = gtk_file_chooser_dialog_new("Save File",
GTK_WINDOW(main_window->window), action, "Cancel", GTK_RESPONSE_CANCEL,
"Save", GTK_RESPONSE_ACCEPT, NULL);
chooser = GTK_FILE_CHOOSER(dialog);
gtk_file_chooser_set_do_overwrite_confirmation(chooser, TRUE);
gtk_file_chooser_set_current_name(chooser, "image.png");
res = gtk_dialog_run(GTK_DIALOG(dialog));
if (res == GTK_RESPONSE_ACCEPT)
{
char *filename;
filename = gtk_file_chooser_get_filename(chooser);
save_image(Image_to_SDL_Surface(image), filename);
g_free(filename);
}
gtk_widget_destroy(dialog);
}
void file_selected(GtkWidget *widget, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
GtkFileChooser *file_chooser;
if (GTK_IS_FILE_CHOOSER(widget))
file_chooser = GTK_FILE_CHOOSER(widget);
else
file_chooser
= GTK_FILE_CHOOSER(main_window->controls->file_chooser_button);
GFile *file = gtk_file_chooser_get_file(file_chooser);
char *path = g_file_get_path(file);
*main_window->images->image = SDL_Surface_to_Image(load_image(path));
*main_window->images->mask = SDL_Surface_to_Image(load_image(path));
*main_window->images->clean = SDL_Surface_to_Image(load_image(path));
main_window->images->is_loaded = TRUE;
// Reset values
main_window->images->current_rotation = 0;
main_window->images->is_rotated = false;
gtk_range_set_value(GTK_RANGE(main_window->controls->rotation_scale), 0);
display_image(main_window->pages->page2->image, main_window->images->clean,
main_window);
gchar label[100];
g_snprintf(label, 100, "Image: %s", path);
gtk_label_set_text(main_window->pages->page2->label, label);
if (widget != NULL)
set_page(main_window, "page2");
}
void previous_page(GtkWidget *widget, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
// TODO: Fix or Remove
}
void open_image(GtkWidget *widget, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
free_used_images(main_window);
GtkWidget *dialog;
GtkFileChooser *chooser;
GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
gint res;
dialog = gtk_file_chooser_dialog_new("Open File",
GTK_WINDOW(main_window->window), action, "Cancel", GTK_RESPONSE_CANCEL,
"Open", GTK_RESPONSE_ACCEPT, NULL);
chooser = GTK_FILE_CHOOSER(dialog);
res = gtk_dialog_run(GTK_DIALOG(dialog));
if (res == GTK_RESPONSE_ACCEPT)
file_selected(GTK_WIDGET(chooser), main_window);
gtk_widget_destroy(dialog);
}
/*
* Page 6
*/
void solve_sudoku(GtkWidget *_, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
set_step(main_window->step_indicators, 6);
printf("Solving Sudoku\n");
int grid[9][9];
for (int i = 0; i < 9; i++)
{
for (int j = 0; j < 9; j++)
{
grid[i][j] = main_window->grid[i][j];
}
}
int original_grid[9][9];
for (int i = 0; i < 9; i++)
{
for (int j = 0; j < 9; j++)
{
original_grid[i][j] = grid[i][j];
}
}
int **res = solvedGrid(grid);
if (res != NULL)
{
gtk_widget_queue_draw(GTK_WIDGET(main_window->pages->page5->image));
}
else
{
printf("Sudoku Not Solved\n");
GtkWidget *dialog
= gtk_message_dialog_new(GTK_WINDOW(main_window->window),
GTK_DIALOG_MODAL, GTK_MESSAGE_ERROR, GTK_BUTTONS_CLOSE,
"This grid could not be solved. Please correct the recognised "
"digits and try again.");
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
return;
}
*main_window->images->image_solved
= SDL_Surface_to_Image(load_image("./assets/grids/blank-grid.png"));
main_window->images->is_solved = TRUE;
displayEmptyGrid(original_grid, grid, main_window->images->image_solved);
display_image(main_window->pages->page6->image,
main_window->images->image_solved, main_window);
set_page(main_window, "page6");
}
/*
* Page 5
*/
void hide_grid(GtkWidget *_, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
if (gtk_toggle_button_get_active(
GTK_TOGGLE_BUTTON(main_window->controls->hide_grid_button)))
{
gtk_widget_hide(GTK_WIDGET(main_window->sudoku_labels_grid));
}
else
{
gtk_widget_show(GTK_WIDGET(main_window->sudoku_labels_grid));
}
}
void hide_image(GtkWidget *_, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
if (gtk_toggle_button_get_active(
GTK_TOGGLE_BUTTON(main_window->controls->hide_image_button)))
{
gtk_widget_hide(GTK_WIDGET(main_window->pages->page5->image));
}
else
{
gtk_widget_show(GTK_WIDGET(main_window->pages->page5->image));
}
}
gboolean *grid_splitting_finished(gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
// Display elements in page 4
display_image(main_window->pages->page4->image,
main_window->images->image_rotated_cropped, main_window);
// Display elements in page 5 and show it
display_image(main_window->pages->page5->image,
main_window->images->image_rotated_cropped, main_window);
set_page(main_window, "page5");
set_step(main_window->step_indicators, 5);
// Reset page 5 state
set_button_to_label(main_window->controls->confirm_crop_button, "Confirm");
gtk_widget_show(GTK_WIDGET(main_window->controls->rotation_scale));
return FALSE;
}
void *grid_splitting_handler(gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
Image **cells = split_grid(main_window->images->image_rotated_cropped,
VERBOSE_MODE, VERBOSE_PATH);
for (int i = 0; i < 9; i++)
{
main_window->grid[i] = malloc(sizeof(int) * 9);
for (int j = 0; j < 9; j++)
{
int c = i * 9 + j;
int digit = neural_network_execute(cells[c]);
free_Image(cells[c]);
free(cells[c]);
main_window->grid[i][j] = digit;
}
}
free(cells);
g_idle_add(grid_splitting_finished, data);
return NULL;
}
gboolean *perspective_correction_finished(gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
display_image(GTK_DRAWING_AREA(main_window->pages->page4->image),
main_window->images->image_rotated_cropped, main_window);
g_thread_new("grid_splitting_handler", (GThreadFunc)grid_splitting_handler,
main_window);
return FALSE;
}
void *perspective_correction_handler(gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
main_window->images->image_rotated_cropped
= correct_perspective(main_window->images->image_rotated_clean,
main_window->images->grid_square, VERBOSE_MODE, VERBOSE_PATH);
main_window->images->is_perspective_corrected = TRUE;
g_idle_add(perspective_correction_finished, data);
}
void perspective_correction(GtkWidget *_, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
set_button_to_load(main_window->controls->confirm_crop_button);
g_thread_new("perspective_correction_handler",
(GThreadFunc)perspective_correction_handler, main_window);
}
gboolean keypress_handler(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
if (event->keyval == GDK_KEY_Escape || event->keyval == GDK_KEY_Return)
{
if (main_window->images->editing_digits)
{
GdkRGBA col = TRANSPARENT;
gtk_widget_override_background_color(
main_window->images->current_label, GTK_STATE_FLAG_NORMAL,
&col);
}
main_window->images->editing_digits = FALSE;
}
else if (event->keyval >= GDK_KEY_0 && GDK_KEY_9 >= event->keyval)
{
if (main_window->images->editing_digits)
{
gchar *name
= gtk_widget_get_name(main_window->images->current_label);
int i = name[0] - '0';
int j = name[2] - '0';
main_window->grid[i][j] = event->keyval - GDK_KEY_0;
gtk_widget_queue_draw(
GTK_WIDGET(main_window->pages->page5->image));
}
}
}
gboolean update_recognised_digits(
GtkWidget *event_box, GdkEvent *event, gpointer user_data)
{
MainWindow *main_window = (MainWindow *)user_data;
if (main_window->images->editing_digits)
{
GdkRGBA col = TRANSPARENT;
gtk_widget_override_background_color(
main_window->images->current_label, GTK_STATE_FLAG_NORMAL, &col);
}
GtkLabel *label = gtk_bin_get_child(GTK_EVENT_BOX(event_box));
GdkRGBA col = ACCENT_COLOR;
gtk_widget_override_background_color(label, GTK_STATE_FLAG_NORMAL, &col);
main_window->images->editing_digits = TRUE;
main_window->images->current_label = label;
}
/*
* Page 4
*/
void update_grid_square_pos(
GtkWidget *widget, GdkEvent *event, gpointer user_data)
{
MainWindow *main_window = (MainWindow *)user_data;
GdkEventMotion *e = (GdkEventMotion *)event;
int x = (int)e->x;
int y = (int)e->y;
// Find the closest point of the grid square
double closest_distance = 1000000;
square *grid_square = main_window->images->grid_square;
point *closest_point = &grid_square->c1;
gint width = gtk_widget_get_allocated_width(
GTK_WIDGET(main_window->pages->page4->image));
gint height = gtk_widget_get_allocated_height(
GTK_WIDGET(main_window->pages->page4->image));
gint image_width = main_window->images->current_image->width;
gint image_height = main_window->images->current_image->height;
gdouble scale_x = (gdouble)width / image_width;
gdouble scale_y = (gdouble)height / image_height;
gdouble scale = MIN(scale_x, scale_y);
gint scaled_width = image_width * scale;
gint scaled_height = image_height * scale;
gint scaled_x = (width - scaled_width) / 2;
gint scaled_y = (height - scaled_height) / 2;
x = (x - scaled_x) / scale;
y = (y - scaled_y) / scale;
point *points[4] = {&grid_square->c1, &grid_square->c2, &grid_square->c3,
&grid_square->c4};
for (int i = 0; i < 4; i++)
{
int x_diff = x - points[i]->x;
int y_diff = y - points[i]->y;
double distance = sqrt(x_diff * x_diff + y_diff * y_diff);
if (distance < closest_distance)
{
closest_distance = distance;
closest_point = points[i];
}
}
closest_point->x = x;
closest_point->y = y;
// Update the grid square
gtk_widget_queue_draw(GTK_DRAWING_AREA(main_window->pages->page4->image));
return;
}
gboolean grid_detection_finished(gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
main_window->images->is_grid_detected = TRUE;
display_image(main_window->pages->page4->image,
main_window->images->image_rotated_clean, main_window);
set_step(main_window->step_indicators, 4);
set_page(main_window, "page4");
return FALSE;
}
void *grid_detection_handler(gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
double rotation = 0;
main_window->images->grid_square
= grid_processing_detect_grid(main_window->images->image_rotated,
&rotation, VERBOSE_MODE, VERBOSE_PATH);
main_window->images->current_rotation += rotation;
*main_window->images->image_rotated_clean = rotate_image(
main_window->images->clean, main_window->images->current_rotation);
g_idle_add(grid_detection_finished, main_window);
return NULL;
}
void process_image(GtkWidget *_, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
set_button_to_load(main_window->controls->image_rotation_done_button);
gtk_widget_hide(GTK_WIDGET(main_window->controls->rotation_scale));
// If the image is not rotated, populate the image_rotated pointer
if (!main_window->images->is_rotated)
*main_window->images->image_rotated
= clone_image(main_window->images->image);
// set this to true so that image_rotated is freed
main_window->images->is_rotated = TRUE;
// Display elements in page 4
gchar label[100];
g_snprintf(label, 100,
"<span weight=\"bold\" size=\"large\">Processing Image</span>");
gtk_label_set_markup(main_window->pages->page4->label, label);
gtk_widget_hide(GTK_WIDGET(main_window->controls->rotation_scale));
set_step(main_window->step_indicators, 3);
display_image(main_window->pages->page4->image,
main_window->images->image_rotated, main_window);
g_thread_new("grid_detection_handler", (GThreadFunc)grid_detection_handler,
main_window);
}
/*
* Page 3
*/
void cancel_image_selection(GtkWidget *_, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
set_page(main_window, "page1");
}
gboolean grid_extraction_finished(gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
display_image(main_window->pages->page3->image, main_window->images->image,
main_window);
set_button_to_label(main_window->controls->confirm_image_button,
"<span weight=\"bold\">Use this image</span>");
set_button_to_label(
main_window->controls->image_rotation_done_button, "Done");
gtk_widget_show(GTK_WIDGET(main_window->controls->rotation_scale));
return FALSE;
}
void *grid_extraction_handler(gpointer data)
{
MainWindow *main_window = (MainWindow *)data;
image_processing_extract_grid(main_window->images->mask,
main_window->images->image, VERBOSE_MODE, VERBOSE_PATH);
g_idle_add(grid_extraction_finished, main_window);
return NULL;
}
void manual_rotate_image(GtkWidget *widget, gpointer data)
{
MainWindow *main_window = (MainWindow *)data;