Add label class.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 494

1 files changed, 110 insertions, 0 deletions

diff --git a/textscreen/txt_label.c b/textscreen/txt_label.c
new file mode 100644
index 00000000..0534f10a
--- /dev/null
+++ b/textscreen/txt_label.c
@@ -0,0 +1,110 @@
+
+#include <string.h>
+
+#include "txt_label.h"
+#include "txt_io.h"
+#include "txt_main.h"
+#include "txt_widget.h"
+#include "txt_window.h"
+
+static void TXT_LabelSizeCalc(txt_widget_t *widget, int *w, int *h)
+{
+    txt_label_t *label = (txt_label_t *) widget;
+
+    *w = label->w;
+    *h = label->h;
+}
+
+static void TXT_LabelDrawer(txt_widget_t *widget, int w, int selected)
+{
+    txt_label_t *label = (txt_label_t *) widget;
+    int i;
+    int origin_x, origin_y;
+
+    TXT_BGColor(TXT_COLOR_BLUE, 0);
+    TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);
+
+    TXT_GetXY(&origin_x, &origin_y);
+
+    for (i=0; i<label->h; ++i)
+    {
+        TXT_GotoXY(origin_x, origin_y + i);
+        TXT_DrawString(label->lines[i]);
+    }
+}
+
+static void TXT_LabelDestructor(txt_widget_t *widget)
+{
+    txt_label_t *label = (txt_label_t *) widget;
+
+    free(label->label);
+    free(label->lines);
+    free(label);
+}
+
+txt_widget_class_t txt_label_class =
+{
+    TXT_LabelSizeCalc,
+    TXT_LabelDrawer,
+    NULL,
+    TXT_LabelDestructor,
+};
+
+static void TXT_SplitLabel(txt_label_t *label)
+{
+    char *p;
+    int y;
+
+    // Work out how many lines in this label
+
+    label->h = 1;
+
+    for (p = label->label; *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));
+
+    label->widget.widget_class = &txt_label_class;
+    label->widget.selectable = 0;
+    label->widget.visible = 1;
+    label->label = strdup(text);
+
+    TXT_SplitLabel(label);
+
+    return label;
+}
+