--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/gtk/text.c Wed Dec 09 11:32:01 2020 +0100
@@ -0,0 +1,651 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2017 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "text.h"
+#include "container.h"
+
+
+static void selection_handler(
+ GtkTextBuffer *buf,
+ GtkTextIter *location,
+ GtkTextMark *mark,
+ UiTextArea *textview)
+{
+ const char *mname = gtk_text_mark_get_name(mark);
+ if(mname) {
+ GtkTextIter begin;
+ GtkTextIter end;
+ int sel = gtk_text_buffer_get_selection_bounds (buf, &begin, &end);
+ if(sel != textview->last_selection_state) {
+ if(sel) {
+ ui_set_group(textview->ctx, UI_GROUP_SELECTION);
+ } else {
+ ui_unset_group(textview->ctx, UI_GROUP_SELECTION);
+ }
+ }
+ textview->last_selection_state = sel;
+ }
+}
+
+UIWIDGET ui_textarea_var(UiObject *obj, UiVar *var) {
+ GtkWidget *text_area = gtk_text_view_new();
+ gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text_area), GTK_WRAP_WORD_CHAR);
+ g_signal_connect(
+ text_area,
+ "realize",
+ G_CALLBACK(ui_textarea_realize_event),
+ NULL);
+
+ UiTextArea *uitext = malloc(sizeof(UiTextArea));
+ uitext->ctx = obj->ctx;
+ uitext->var = var;
+ uitext->last_selection_state = 0;
+
+ g_signal_connect(
+ text_area,
+ "destroy",
+ G_CALLBACK(ui_textarea_destroy),
+ uitext);
+
+ GtkWidget *scroll_area = gtk_scrolled_window_new (NULL, NULL);
+ gtk_scrolled_window_set_policy(
+ GTK_SCROLLED_WINDOW(scroll_area),
+ GTK_POLICY_AUTOMATIC,
+ GTK_POLICY_AUTOMATIC); // GTK_POLICY_ALWAYS
+ gtk_container_add(GTK_CONTAINER(scroll_area), text_area);
+
+ // font and padding
+ PangoFontDescription *font;
+ font = pango_font_description_from_string("Monospace");
+ gtk_widget_modify_font(text_area, font);
+ pango_font_description_free(font);
+
+ gtk_text_view_set_left_margin(GTK_TEXT_VIEW(text_area), 2);
+ gtk_text_view_set_right_margin(GTK_TEXT_VIEW(text_area), 2);
+
+ // add
+ UiContainer *ct = uic_get_current_container(obj);
+ ct->add(ct, scroll_area, TRUE);
+
+ // bind value
+ UiText *value = var->value;
+ if(value) {
+ GtkTextBuffer *buf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(text_area));
+
+ if(value->value.ptr) {
+ gtk_text_buffer_set_text(buf, value->value.ptr, -1);
+ value->value.free(value->value.ptr);
+ }
+
+ value->get = ui_textarea_get;
+ value->set = ui_textarea_set;
+ value->getsubstr = ui_textarea_getsubstr;
+ value->insert = ui_textarea_insert;
+ value->setposition = ui_textarea_setposition;
+ value->position = ui_textarea_position;
+ value->selection = ui_textarea_selection;
+ value->length = ui_textarea_length;
+ value->remove = ui_textarea_remove;
+ value->value.ptr = NULL;
+ value->value.free = NULL;
+ value->obj = buf;
+ if(!value->undomgr) {
+ value->undomgr = ui_create_undomgr();
+ }
+
+ g_signal_connect(
+ buf,
+ "changed",
+ G_CALLBACK(ui_textbuf_changed),
+ uitext);
+
+ // register undo manager
+ g_signal_connect(
+ buf,
+ "insert-text",
+ G_CALLBACK(ui_textbuf_insert),
+ var);
+ g_signal_connect(
+ buf,
+ "delete-range",
+ G_CALLBACK(ui_textbuf_delete),
+ var);
+ g_signal_connect(
+ buf,
+ "mark-set",
+ G_CALLBACK(selection_handler),
+ uitext);
+ }
+
+ return scroll_area;
+}
+
+void ui_textarea_destroy(GtkWidget *object, UiTextArea *textarea) {
+ ui_destroy_boundvar(textarea->ctx, textarea->var);
+ free(textarea);
+}
+
+UIWIDGET ui_textarea(UiObject *obj, UiText *value) {
+ UiVar *var = malloc(sizeof(UiVar));
+ var->value = value;
+ var->type = UI_VAR_SPECIAL;
+ var->from = NULL;
+ var->from_ctx = NULL;
+ return ui_textarea_var(obj, var);
+}
+
+UIWIDGET ui_textarea_nv(UiObject *obj, char *varname) {
+ UiVar *var = uic_create_var(obj->ctx, varname, UI_VAR_TEXT);
+ if(var) {
+ return ui_textarea_var(obj, var);
+ } else {
+ // TODO: error
+ }
+ return NULL;
+}
+
+char* ui_textarea_get(UiText *text) {
+ if(text->value.ptr) {
+ text->value.free(text->value.ptr);
+ }
+ GtkTextBuffer *buf = text->obj;
+ GtkTextIter start;
+ GtkTextIter end;
+ gtk_text_buffer_get_bounds(buf, &start, &end);
+ char *str = gtk_text_buffer_get_text(buf, &start, &end, FALSE);
+ text->value.ptr = g_strdup(str);
+ text->value.free = (ui_freefunc)g_free;
+ return str;
+}
+
+void ui_textarea_set(UiText *text, char *str) {
+ gtk_text_buffer_set_text((GtkTextBuffer*)text->obj, str, -1);
+ if(text->value.ptr) {
+ text->value.free(text->value.ptr);
+ }
+ text->value.ptr = NULL;
+ text->value.free = NULL;
+}
+
+char* ui_textarea_getsubstr(UiText *text, int begin, int end) {
+ if(text->value.ptr) {
+ text->value.free(text->value.ptr);
+ }
+ GtkTextBuffer *buf = text->obj;
+ GtkTextIter ib;
+ GtkTextIter ie;
+ gtk_text_buffer_get_iter_at_offset(text->obj, &ib, begin);
+ gtk_text_buffer_get_iter_at_offset(text->obj, &ie, end);
+ char *str = gtk_text_buffer_get_text(buf, &ib, &ie, FALSE);
+ text->value.ptr = g_strdup(str);
+ text->value.free = (ui_freefunc)g_free;
+ return str;
+}
+
+void ui_textarea_insert(UiText *text, int pos, char *str) {
+ GtkTextIter offset;
+ gtk_text_buffer_get_iter_at_offset(text->obj, &offset, pos);
+ gtk_text_buffer_insert(text->obj, &offset, str, -1);
+ if(text->value.ptr) {
+ text->value.free(text->value.ptr);
+ }
+ text->value.ptr = NULL;
+ text->value.free = NULL;
+}
+
+void ui_textarea_setposition(UiText *text, int pos) {
+ GtkTextIter iter;
+ gtk_text_buffer_get_iter_at_offset(text->obj, &iter, pos);
+ gtk_text_buffer_place_cursor(text->obj, &iter);
+}
+
+int ui_textarea_position(UiText *text) {
+ GtkTextIter begin;
+ GtkTextIter end;
+ gtk_text_buffer_get_selection_bounds(text->obj, &begin, &end);
+ text->pos = gtk_text_iter_get_offset(&begin);
+ return text->pos;
+}
+
+void ui_textarea_selection(UiText *text, int *begin, int *end) {
+ GtkTextIter b;
+ GtkTextIter e;
+ gtk_text_buffer_get_selection_bounds(text->obj, &b, &e);
+ *begin = gtk_text_iter_get_offset(&b);
+ *end = gtk_text_iter_get_offset(&e);
+}
+
+int ui_textarea_length(UiText *text) {
+ GtkTextBuffer *buf = text->obj;
+ GtkTextIter start;
+ GtkTextIter end;
+ gtk_text_buffer_get_bounds(buf, &start, &end);
+ return gtk_text_iter_get_offset(&end);
+}
+
+void ui_textarea_remove(UiText *text, int begin, int end) {
+ GtkTextBuffer *buf = text->obj;
+ GtkTextIter ib;
+ GtkTextIter ie;
+ gtk_text_buffer_get_iter_at_offset(buf, &ib, begin);
+ gtk_text_buffer_get_iter_at_offset(buf, &ie, end);
+ gtk_text_buffer_delete(buf, &ib, &ie);
+}
+
+void ui_textarea_realize_event(GtkWidget *widget, gpointer data) {
+ gtk_widget_grab_focus(widget);
+}
+
+
+
+void ui_textbuf_changed(GtkTextBuffer *textbuffer, UiTextArea *textarea) {
+ UiText *value = textarea->var->value;
+ if(value->observers) {
+ UiEvent e;
+ e.obj = textarea->ctx->obj;
+ e.window = e.obj->window;
+ e.document = textarea->ctx->document;
+ e.eventdata = value;
+ e.intval = 0;
+ ui_notify_evt(value->observers, &e);
+ }
+}
+
+// undo manager functions
+
+void ui_textbuf_insert(
+ GtkTextBuffer *textbuffer,
+ GtkTextIter *location,
+ char *text,
+ int length,
+ void *data)
+{
+ UiVar *var = data;
+ UiText *value = var->value;
+ if(!value->undomgr) {
+ value->undomgr = ui_create_undomgr();
+ }
+ UiUndoMgr *mgr = value->undomgr;
+ if(!mgr->event) {
+ return;
+ }
+
+ if(mgr->cur) {
+ UcxList *elm = mgr->cur->next;
+ if(elm) {
+ mgr->cur->next = NULL;
+ while(elm) {
+ elm->prev = NULL;
+ UcxList *next = elm->next;
+ ui_free_textbuf_op(elm->data);
+ free(elm);
+ elm = next;
+ }
+ }
+
+ UiTextBufOp *last_op = mgr->cur->data;
+ if(
+ last_op->type == UI_TEXTBUF_INSERT &&
+ ui_check_insertstr(last_op->text, last_op->len, text, length) == 0)
+ {
+ // append text to last op
+ int ln = last_op->len;
+ char *newtext = malloc(ln + length + 1);
+ memcpy(newtext, last_op->text, ln);
+ memcpy(newtext+ln, text, length);
+ newtext[ln+length] = '\0';
+
+ last_op->text = newtext;
+ last_op->len = ln + length;
+ last_op->end += length;
+
+ return;
+ }
+ }
+
+ char *dpstr = malloc(length + 1);
+ memcpy(dpstr, text, length);
+ dpstr[length] = 0;
+
+ UiTextBufOp *op = malloc(sizeof(UiTextBufOp));
+ op->type = UI_TEXTBUF_INSERT;
+ op->start = gtk_text_iter_get_offset(location);
+ op->end = op->start+length;
+ op->len = length;
+ op->text = dpstr;
+
+ UcxList *elm = ucx_list_append(NULL, op);
+ mgr->cur = elm;
+ mgr->begin = ucx_list_concat(mgr->begin, elm);
+}
+
+void ui_textbuf_delete(
+ GtkTextBuffer *textbuffer,
+ GtkTextIter *start,
+ GtkTextIter *end,
+ void *data)
+{
+ UiVar *var = data;
+ UiText *value = var->value;
+ if(!value->undomgr) {
+ value->undomgr = ui_create_undomgr();
+ }
+ UiUndoMgr *mgr = value->undomgr;
+ if(!mgr->event) {
+ return;
+ }
+
+ if(mgr->cur) {
+ UcxList *elm = mgr->cur->next;
+ if(elm) {
+ mgr->cur->next = NULL;
+ while(elm) {
+ elm->prev = NULL;
+ UcxList *next = elm->next;
+ ui_free_textbuf_op(elm->data);
+ free(elm);
+ elm = next;
+ }
+ }
+ }
+
+ char *text = gtk_text_buffer_get_text(value->obj, start, end, FALSE);
+
+ UiTextBufOp *op = malloc(sizeof(UiTextBufOp));
+ op->type = UI_TEXTBUF_DELETE;
+ op->start = gtk_text_iter_get_offset(start);
+ op->end = gtk_text_iter_get_offset(end);
+ op->len = op->end - op->start;
+
+ char *dpstr = malloc(op->len + 1);
+ memcpy(dpstr, text, op->len);
+ dpstr[op->len] = 0;
+ op->text = dpstr;
+
+ UcxList *elm = ucx_list_append(NULL, op);
+ mgr->cur = elm;
+ mgr->begin = ucx_list_concat(mgr->begin, elm);
+}
+
+UiUndoMgr* ui_create_undomgr() {
+ UiUndoMgr *mgr = malloc(sizeof(UiUndoMgr));
+ mgr->begin = NULL;
+ mgr->cur = NULL;
+ mgr->length = 0;
+ mgr->event = 1;
+ return mgr;
+}
+
+void ui_free_textbuf_op(UiTextBufOp *op) {
+ if(op->text) {
+ free(op->text);
+ }
+ free(op);
+}
+
+int ui_check_insertstr(char *oldstr, int oldlen, char *newstr, int newlen) {
+ // return 1 if oldstr + newstr are one word
+
+ int has_space = 0;
+ for(int i=0;i<oldlen;i++) {
+ if(oldstr[i] < 33) {
+ has_space = 1;
+ break;
+ }
+ }
+
+ for(int i=0;i<newlen;i++) {
+ if(has_space && newstr[i] > 32) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+void ui_text_undo(UiText *value) {
+ UiUndoMgr *mgr = value->undomgr;
+
+ if(mgr->cur) {
+ UiTextBufOp *op = mgr->cur->data;
+ mgr->event = 0;
+ switch(op->type) {
+ case UI_TEXTBUF_INSERT: {
+ GtkTextIter begin;
+ GtkTextIter end;
+ gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start);
+ gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end);
+ gtk_text_buffer_delete(value->obj, &begin, &end);
+ break;
+ }
+ case UI_TEXTBUF_DELETE: {
+ GtkTextIter begin;
+ GtkTextIter end;
+ gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start);
+ gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end);
+ gtk_text_buffer_insert(value->obj, &begin, op->text, op->len);
+ break;
+ }
+ }
+ mgr->event = 1;
+ mgr->cur = mgr->cur->prev;
+ }
+}
+
+void ui_text_redo(UiText *value) {
+ UiUndoMgr *mgr = value->undomgr;
+
+ UcxList *elm = NULL;
+ if(mgr->cur) {
+ if(mgr->cur->next) {
+ elm = mgr->cur->next;
+ }
+ } else if(mgr->begin) {
+ elm = mgr->begin;
+ }
+
+ if(elm) {
+ UiTextBufOp *op = elm->data;
+ mgr->event = 0;
+ switch(op->type) {
+ case UI_TEXTBUF_INSERT: {
+ GtkTextIter begin;
+ GtkTextIter end;
+ gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start);
+ gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end);
+ gtk_text_buffer_insert(value->obj, &begin, op->text, op->len);
+ break;
+ }
+ case UI_TEXTBUF_DELETE: {
+ GtkTextIter begin;
+ GtkTextIter end;
+ gtk_text_buffer_get_iter_at_offset(value->obj, &begin, op->start);
+ gtk_text_buffer_get_iter_at_offset(value->obj, &end, op->end);
+ gtk_text_buffer_delete(value->obj, &begin, &end);
+ break;
+ }
+ }
+ mgr->event = 1;
+ mgr->cur = elm;
+ }
+}
+
+
+static UIWIDGET create_textfield_var(UiObject *obj, int width, UiBool frameless, UiBool password, UiVar *var) {
+ GtkWidget *textfield = gtk_entry_new();
+
+ UiTextField *uitext = malloc(sizeof(UiTextField));
+ uitext->ctx = obj->ctx;
+ uitext->var = var;
+
+ g_signal_connect(
+ textfield,
+ "destroy",
+ G_CALLBACK(ui_textfield_destroy),
+ uitext);
+
+ if(width > 0) {
+ gtk_entry_set_width_chars(GTK_ENTRY(textfield), width);
+ }
+ if(frameless) {
+ // TODO: gtk2legacy workaroud
+ gtk_entry_set_has_frame(GTK_ENTRY(textfield), FALSE);
+ }
+ if(password) {
+ gtk_entry_set_visibility(GTK_ENTRY(textfield), FALSE);
+ }
+
+ UiContainer *ct = uic_get_current_container(obj);
+ ct->add(ct, textfield, FALSE);
+
+ if(var) {
+ UiString *value = var->value;
+ if(value->value.ptr) {
+ gtk_entry_set_text(GTK_ENTRY(textfield), value->value.ptr);
+ value->value.free(value->value.ptr);
+ value->value.ptr = NULL;
+ value->value.free = NULL;
+ }
+
+ value->get = ui_textfield_get;
+ value->set = ui_textfield_set;
+ value->value.ptr = NULL;
+ value->value.free = NULL;
+ value->obj = GTK_ENTRY(textfield);
+
+ g_signal_connect(
+ textfield,
+ "changed",
+ G_CALLBACK(ui_textfield_changed),
+ uitext);
+ }
+
+ return textfield;
+}
+
+static UIWIDGET create_textfield_nv(UiObject *obj, int width, UiBool frameless, UiBool password, char *varname) {
+ UiVar *var = uic_create_var(obj->ctx, varname, UI_VAR_STRING);
+ if(var) {
+ return create_textfield_var(obj, width, frameless, password, var);
+ } else {
+ // TODO: error
+ }
+ return NULL;
+}
+
+static UIWIDGET create_textfield(UiObject *obj, int width, UiBool frameless, UiBool password, UiString *value) {
+ UiVar *var = NULL;
+ if(value) {
+ var = malloc(sizeof(UiVar));
+ var->value = value;
+ var->type = UI_VAR_SPECIAL;
+ }
+ return create_textfield_var(obj, width, frameless, password, var);
+}
+
+void ui_textfield_destroy(GtkWidget *object, UiTextField *textfield) {
+ if(textfield->var) {
+ ui_destroy_boundvar(textfield->ctx, textfield->var);
+ }
+ free(textfield);
+}
+
+void ui_textfield_changed(GtkEditable *editable, UiTextField *textfield) {
+ UiString *value = textfield->var->value;
+ if(value->observers) {
+ UiEvent e;
+ e.obj = textfield->ctx->obj;
+ e.window = e.obj->window;
+ e.document = textfield->ctx->document;
+ e.eventdata = value;
+ e.intval = 0;
+ ui_notify_evt(value->observers, &e);
+ }
+}
+
+UIWIDGET ui_textfield(UiObject *obj, UiString *value) {
+ return create_textfield(obj, 0, FALSE, FALSE, value);
+}
+
+UIWIDGET ui_textfield_nv(UiObject *obj, char *varname) {
+ return create_textfield_nv(obj, 0, FALSE, FALSE, varname);
+}
+
+UIWIDGET ui_textfield_w(UiObject *obj, int width, UiString *value) {
+ return create_textfield(obj, width, FALSE, FALSE, value);
+}
+
+UIWIDGET ui_textfield_wnv(UiObject *obj, int width, char *varname) {
+ return create_textfield_nv(obj, width, FALSE, FALSE, varname);
+}
+
+UIWIDGET ui_frameless_textfield(UiObject *obj, UiString *value) {
+ return create_textfield(obj, 0, TRUE, FALSE, value);
+}
+
+UIWIDGET ui_frameless_textfield_nv(UiObject *obj, char *varname) {
+ return create_textfield_nv(obj, 0, TRUE, FALSE, varname);
+}
+
+UIWIDGET ui_passwordfield(UiObject *obj, UiString *value) {
+ return create_textfield(obj, 0, FALSE, TRUE, value);
+}
+
+UIWIDGET ui_passwordfield_nv(UiObject *obj, char *varname) {
+ return create_textfield_nv(obj, 0, FALSE, TRUE, varname);
+}
+
+UIWIDGET ui_passwordfield_w(UiObject *obj, int width, UiString *value) {
+ return create_textfield(obj, width, FALSE, TRUE, value);
+}
+
+UIWIDGET ui_passwordfield_wnv(UiObject *obj, int width, char *varname) {
+ return create_textfield_nv(obj, width, FALSE, TRUE, varname);
+}
+
+char* ui_textfield_get(UiString *str) {
+ if(str->value.ptr) {
+ str->value.free(str->value.ptr);
+ }
+ str->value.ptr = g_strdup(gtk_entry_get_text(str->obj));
+ str->value.free = (ui_freefunc)g_free;
+ return str->value.ptr;
+}
+
+void ui_textfield_set(UiString *str, char *value) {
+ gtk_entry_set_text(str->obj, value);
+ if(str->value.ptr) {
+ str->value.free(str->value.ptr);
+ str->value.ptr = NULL;
+ str->value.free = NULL;
+ }
+}