diff options
| author | mbkma <[email protected]> | 2020-02-13 22:24:23 +0100 |
|---|---|---|
| committer | lukefromdc <[email protected]> | 2020-02-27 05:50:08 +0000 |
| commit | 8de77e33ab168df33b2a4bc7a7fe45aed75e9040 (patch) | |
| tree | 379e6ad7924cd65ffad2f7d0a8a2464618772940 /src/math-history.c | |
| parent | 432a684f6139ec0029eff6469e2873c11cb9adc4 (diff) | |
| download | mate-calc-8de77e33ab168df33b2a4bc7a7fe45aed75e9040.tar.bz2 mate-calc-8de77e33ab168df33b2a4bc7a7fe45aed75e9040.tar.xz | |
add history view to show recent calculations.
add option to enable/disable history (disabled by default).
add possibility to resize mate-calc if history is enabled.
Diffstat (limited to 'src/math-history.c')
| -rw-r--r-- | src/math-history.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/src/math-history.c b/src/math-history.c new file mode 100644 index 0000000..18b9bda --- /dev/null +++ b/src/math-history.c @@ -0,0 +1,117 @@ +/* + * Copyright (C) 2020 MATE developers + * + * 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 2 of the License, or (at your option) any later + * version. See http://www.gnu.org/copyleft/gpl.html the full text of the + * license. + * + * + */ + +#include <string.h> +#include <glib/gi18n.h> +#include <gdk/gdkkeysyms.h> + +#include "math-history.h" + +struct MathHistoryPrivate +{ + MathEquation *equation; + + MathHistoryEntry *entry; + char *prev_equation; + int items_count; /* Number of entries in history listbox */ + GtkWidget *listbox; +}; + +G_DEFINE_TYPE_WITH_PRIVATE(MathHistory, math_history, GTK_TYPE_SCROLLED_WINDOW); + +MathHistory * +math_history_new(MathEquation *equation) +{ + MathHistory *history = g_object_new(math_history_get_type(), NULL); + history->priv->equation = g_object_ref(equation); + return history; +} + +static void +scroll_bottom_cb(MathHistory *history, gpointer data) +{ + GtkAdjustment *adjustment; + // TODO make this dynamic, do not hardcode listbox_height_request/number_of_rows + int width, height; + + adjustment = gtk_list_box_get_adjustment(GTK_LIST_BOX(history->priv->listbox)); + gtk_widget_get_size_request(GTK_WIDGET(history), &width, &height); + gtk_adjustment_set_page_size(adjustment, height / 3); + gtk_adjustment_set_value (adjustment, gtk_adjustment_get_upper (adjustment) + - gtk_adjustment_get_page_size (adjustment)); +} + +static gboolean +check_history(MathHistory *history, char *equation) +{ /* Checks if the last inserted calculation is the same as the current calculation to be inserted in history-history */ + if (history->priv->items_count >= 1 && g_strcmp0(equation, history->priv->prev_equation)==0) + return TRUE; /* returns true if last entered equation is the same as the current equation */ + else + return FALSE; +} + +void +math_history_insert_entry (MathHistory *history, char *equation, MPNumber *answer, int number_base) +{ /* Inserts a new entry into the history-history listbox */ + history->priv->entry = math_history_entry_new(history->priv->equation); + gboolean check = check_history (history, equation); + history->priv->prev_equation = g_strdup(equation); + if (!check) + { + math_history_entry_insert_entry(history->priv->entry, equation, answer, number_base); + if (history->priv->entry != NULL) + { + gtk_list_box_insert(GTK_LIST_BOX(history->priv->listbox), GTK_WIDGET(history->priv->entry), -1); + gtk_widget_set_can_focus(GTK_WIDGET(history->priv->entry), FALSE); + gtk_widget_show_all(GTK_WIDGET(history->priv->entry)); + history->priv->items_count++; + } + } + g_signal_emit_by_name(history, "row-added"); +} + +static void +math_history_class_init(MathHistoryClass *klass) +{ + g_signal_new("row-added", + G_TYPE_FROM_CLASS(klass), + G_SIGNAL_RUN_FIRST, + 0, + NULL, + NULL, + NULL, + G_TYPE_NONE, + 0, + NULL); +} + +static void +math_history_init(MathHistory *history) +{ + history->priv = math_history_get_instance_private(history); + gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(history), GTK_SHADOW_IN); + gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(history), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC); + gtk_scrolled_window_set_placement(GTK_SCROLLED_WINDOW(history), GTK_CORNER_TOP_LEFT); + + history->priv->items_count = 0; + history->priv->prev_equation = ""; + history->priv->listbox = gtk_list_box_new(); + gtk_list_box_set_selection_mode(GTK_LIST_BOX(history->priv->listbox), GTK_SELECTION_NONE); + gtk_widget_show(GTK_WIDGET(history->priv->listbox)); + + gtk_container_add(GTK_CONTAINER(history), history->priv->listbox); + gtk_widget_set_valign(GTK_WIDGET(history->priv->listbox), GTK_ALIGN_END); + gtk_widget_set_size_request(GTK_WIDGET(history), 100, 100); + gtk_widget_set_can_focus(GTK_WIDGET(history), FALSE); + + g_signal_connect(history, "row-added", G_CALLBACK(scroll_bottom_cb), NULL); +} |