Add efacf056cd

dockerdoom/trunk/textscreen/txt_label.c

@@ -0,0 +1,196 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 2006 Simon Howard
+//
+// 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.
+//
+// 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, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "txt_label.h"
+#include "txt_gui.h"
+#include "txt_io.h"
+#include "txt_main.h"
+#include "txt_window.h"
+
+static void TXT_LabelSizeCalc(TXT_UNCAST_ARG(label))
+{
+    TXT_CAST_ARG(txt_label_t, label);
+
+    label->widget.w = label->w;
+    label->widget.h = label->h;
+}
+
+static void TXT_LabelDrawer(TXT_UNCAST_ARG(label), int selected)
+{
+    TXT_CAST_ARG(txt_label_t, label);
+    unsigned int x, y;
+    int origin_x, origin_y;
+    unsigned int align_indent = 0;
+    unsigned int w;
+
+    w = label->widget.w;
+
+    TXT_BGColor(label->bgcolor, 0);
+    TXT_FGColor(label->fgcolor);
+
+    TXT_GetXY(&origin_x, &origin_y);
+
+    for (y=0; y<label->h; ++y)
+    {
+        // Calculate the amount to indent this line due to the align 
+        // setting
+
+        switch (label->widget.align)
+        {
+            case TXT_HORIZ_LEFT:
+                align_indent = 0;
+                break;
+            case TXT_HORIZ_CENTER:
+                align_indent = (label->w - strlen(label->lines[y])) / 2;
+                break;
+            case TXT_HORIZ_RIGHT:
+                align_indent = label->w - strlen(label->lines[y]);
+                break;
+        }
+        
+        // Draw this line
+
+        TXT_GotoXY(origin_x, origin_y + y);
+
+        // Gap at the start
+
+        for (x=0; x<align_indent; ++x)
+        {
+            TXT_DrawString(" ");
+        }
+
+        // The string itself
+
+        TXT_DrawString(label->lines[y]);
+        x += strlen(label->lines[y]);
+
+        // Gap at the end
+
+        for (; x<w; ++x)
+        {
+            TXT_DrawString(" ");
+        }
+    }
+}
+
+static void TXT_LabelDestructor(TXT_UNCAST_ARG(label))
+{
+    TXT_CAST_ARG(txt_label_t, label);
+
+    free(label->label);
+    free(label->lines);
+}
+
+txt_widget_class_t txt_label_class =
+{
+    TXT_NeverSelectable,
+    TXT_LabelSizeCalc,
+    TXT_LabelDrawer,
+    NULL,
+    TXT_LabelDestructor,
+    NULL,
+    NULL,
+};
+
+void TXT_SetLabel(txt_label_t *label, char *value)
+{
+    char *p;
+    unsigned int y;
+
+    // Free back the old label
+
+    free(label->label);
+    free(label->lines);
+
+    // Set the new value 
+
+    label->label = strdup(value);
+
+    // Work out how many lines in this label
+
+    label->h = 1;
+
+    for (p = value; *p != '\0'; ++p)
+    {
+        if (*p == '\n')
+        {
+            ++label->h;
+        }
+    }
+
+    // Split into lines
+
+    label->lines = malloc(sizeof(char *) * label->h);
+    label->lines[0] = label->label;
+    y = 1;
+    
+    for (p = label->label; *p != '\0'; ++p)
+    {
+        if (*p == '\n')
+        {
+            label->lines[y] = p + 1;
+            *p = '\0';
+            ++y;
+        }
+    }
+
+    label->w = 0;
+
+    for (y=0; y<label->h; ++y)
+    {
+        if (strlen(label->lines[y]) > label->w)
+            label->w = strlen(label->lines[y]);
+    }
+}
+
+txt_label_t *TXT_NewLabel(char *text)
+{
+    txt_label_t *label;
+
+    label = malloc(sizeof(txt_label_t));
+
+    TXT_InitWidget(label, &txt_label_class);
+    label->label = NULL;
+    label->lines = NULL;
+
+    // Default colors
+
+    label->bgcolor = TXT_WINDOW_BACKGROUND;
+    label->fgcolor = TXT_COLOR_BRIGHT_WHITE;
+
+    TXT_SetLabel(label, text);
+
+    return label;
+}
+
+void TXT_SetFGColor(txt_label_t *label, txt_color_t color)
+{
+    label->fgcolor = color;
+}
+
+void TXT_SetBGColor(txt_label_t *label, txt_color_t color)
+{
+    label->bgcolor = color;
+}
+