shithub: choc

--- a/NEWS

+++ b/NEWS

@@ -49,6 +49,8 @@

        match the game default (thanks Alexandre Xavier).

     libtextscreen:

+     * The background on GUI controls now lights up when hovering over

+       them, so that it is more obvious what you are selecting.

      * It is now possible to type a '+' in input boxes (thanks

        Alexandre Xavier).

      * It is possible to use the mouse wheel to scroll through scroll

--- a/setup/txt_joybinput.c

+++ b/setup/txt_joybinput.c

@@ -153,15 +153,7 @@

         GetJoystickButtonDescription(*joystick_input->variable, buf);

-    if (selected)

-    {

-        TXT_BGColor(TXT_COLOR_GREY, 0);

-    }

-    else

-    {

-        TXT_BGColor(TXT_COLOR_BLUE, 0);

-    }

+    TXT_SetWidgetBG(joystick_input, selected);

     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);

     TXT_DrawString(buf);

--- a/setup/txt_keyinput.c

+++ b/setup/txt_keyinput.c

@@ -118,15 +118,7 @@

         TXT_GetKeyDescription(*key_input->variable, buf);

-    if (selected)

-    {

-        TXT_BGColor(TXT_COLOR_GREY, 0);

-    }

-    else

-    {

-        TXT_BGColor(TXT_COLOR_BLUE, 0);

-    }

+    TXT_SetWidgetBG(key_input, selected);

     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);

     TXT_DrawString(buf);

--- a/setup/txt_mouseinput.c

+++ b/setup/txt_mouseinput.c

@@ -111,15 +111,7 @@

         GetMouseButtonDescription(*mouse_input->variable, buf);

-    if (selected)

-    {

-        TXT_BGColor(TXT_COLOR_GREY, 0);

-    }

-    else

-    {

-        TXT_BGColor(TXT_COLOR_BLUE, 0);

-    }

+    TXT_SetWidgetBG(mouse_input, selected);

     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);

     TXT_DrawString(buf);

--- a/textscreen/txt_button.c

+++ b/textscreen/txt_button.c

@@ -46,16 +46,12 @@

     w = button->widget.w;

-    TXT_BGColor(TXT_COLOR_BLUE, 0);

     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);

-    if (selected)

-    {

-        TXT_BGColor(TXT_COLOR_GREY, 0);

-    }

+    TXT_SetWidgetBG(button, selected);

     TXT_DrawString(button->label);

     for (i=strlen(button->label); i < w; ++i)

         TXT_DrawString(" ");

--- a/textscreen/txt_checkbox.c

+++ b/textscreen/txt_checkbox.c

@@ -48,7 +48,7 @@

     w = checkbox->widget.w;

-    TXT_BGColor(TXT_COLOR_BLUE, 0);

+    TXT_BGColor(TXT_WINDOW_BACKGROUND, 0);

     TXT_FGColor(TXT_COLOR_BRIGHT_CYAN);

     TXT_DrawString("(");

@@ -67,11 +67,7 @@

     TXT_DrawString(") ");

-    if (selected)

-    {

-        TXT_BGColor(TXT_COLOR_GREY, 0);

-    }

+    TXT_SetWidgetBG(checkbox, selected);

     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);

     TXT_DrawString(checkbox->label);

--- a/textscreen/txt_desktop.c

+++ b/textscreen/txt_desktop.c

@@ -61,6 +61,16 @@

     num_windows = to;

+txt_window_t *TXT_GetActiveWindow(void)

+{

+    if (num_windows == 0)

+    {

+        return NULL;

+    }

+    return all_windows[num_windows - 1];

+}

 static void DrawDesktopBackground(const char *title)

     int i;

--- a/textscreen/txt_desktop.h

+++ b/textscreen/txt_desktop.h

@@ -63,6 +63,15 @@

 void TXT_GUIMainLoop(void);

+/**

+ * Get the top window on the desktop that is currently receiving

+ * inputs.

+ *

+ * @return    The active window, or NULL if no windows are present.

+ */

+txt_window_t *TXT_GetActiveWindow(void);

 #endif /* #ifndef TXT_DESKTOP_H */

--- a/textscreen/txt_dropdown.c

+++ b/textscreen/txt_dropdown.c

@@ -197,15 +197,7 @@

     // Set bg/fg text colors.

-    if (selected)

-    {

-        TXT_BGColor(TXT_COLOR_GREY, 0);

-    }

-    else

-    {

-        TXT_BGColor(TXT_COLOR_BLUE, 0);

-    }

+    TXT_SetWidgetBG(list, selected);

     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);

     // Select a string to draw from the list, if the current value is

--- a/textscreen/txt_gui.c

+++ b/textscreen/txt_gui.c

@@ -131,7 +131,7 @@

     int bx, by;

     TXT_FGColor(TXT_COLOR_BRIGHT_CYAN);

-    TXT_BGColor(TXT_COLOR_BLUE, 0);

+    TXT_BGColor(TXT_WINDOW_BACKGROUND, 0);

     for (y1=y; y1<y+h; ++y1)

@@ -191,7 +191,7 @@

     data = TXT_GetScreenData();

     TXT_FGColor(TXT_COLOR_BRIGHT_CYAN);

-    TXT_BGColor(TXT_COLOR_BLUE, 0);

+    TXT_BGColor(TXT_WINDOW_BACKGROUND, 0);

     if (!VALID_Y(y))

--- a/textscreen/txt_gui.h

+++ b/textscreen/txt_gui.h

@@ -27,6 +27,9 @@

 #ifndef TXT_GUI_H

 #define TXT_GUI_H

+#define TXT_WINDOW_BACKGROUND TXT_COLOR_BLUE

+#define TXT_HOVER_BACKGROUND  TXT_COLOR_CYAN

 void TXT_DrawDesktopBackground(const char *title);

 void TXT_DrawWindowFrame(const char *title, int x, int y, int w, int h);

 void TXT_DrawSeparator(int x, int y, int w);

@@ -34,6 +37,7 @@

 void TXT_DrawHorizScrollbar(int x, int y, int w, int cursor, int range);

 void TXT_DrawVertScrollbar(int x, int y, int h, int cursor, int range);

 void TXT_InitClipArea(void);

 void TXT_PushClipArea(int x1, int x2, int y1, int y2);

--- a/textscreen/txt_inputbox.c

+++ b/textscreen/txt_inputbox.c

@@ -60,15 +60,9 @@

         TXT_BGColor(TXT_COLOR_BLACK, 0);

-    else if (selected)

-    {

-        TXT_BGColor(TXT_COLOR_GREY, 0);

-    }

     else

-        // Not even selected

-        TXT_BGColor(TXT_COLOR_BLUE, 0);

+        TXT_SetWidgetBG(inputbox, selected);

     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);

--- a/textscreen/txt_label.c

+++ b/textscreen/txt_label.c

@@ -176,7 +176,7 @@

     // Default colors

-    label->bgcolor = TXT_COLOR_BLUE;

+    label->bgcolor = TXT_WINDOW_BACKGROUND;

     label->fgcolor = TXT_COLOR_BRIGHT_WHITE;

     TXT_SetLabel(label, text);

--- a/textscreen/txt_radiobutton.c

+++ b/textscreen/txt_radiobutton.c

@@ -48,7 +48,7 @@

     w = radiobutton->widget.w;

-    TXT_BGColor(TXT_COLOR_BLUE, 0);

+    TXT_BGColor(TXT_WINDOW_BACKGROUND, 0);

     TXT_FGColor(TXT_COLOR_BRIGHT_CYAN);

     TXT_DrawString("(");

@@ -67,11 +67,7 @@

     TXT_DrawString(") ");

-    if (selected)

-    {

-        TXT_BGColor(TXT_COLOR_GREY, 0);

-    }

+    TXT_SetWidgetBG(radiobutton, selected);

     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);

     TXT_DrawString(radiobutton->label);

--- a/textscreen/txt_scrollpane.c

+++ b/textscreen/txt_scrollpane.c

@@ -557,6 +557,10 @@

     scrollpane->expand_w = w <= 0;

     scrollpane->expand_h = h <= 0;

+    // Set parent pointer for inner widget.

+    target->parent = &scrollpane->widget;

     return scrollpane;

--- a/textscreen/txt_sdl.c

+++ b/textscreen/txt_sdl.c

@@ -221,7 +221,7 @@

     // Ignore all mouse motion events

-    SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);

+//    SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);

     // Repeat key presses so we can hold down arrows to scroll down the

     // menu, for example. This is what setup.exe does.

@@ -475,6 +475,24 @@

+static int MouseHasMoved(void)

+{

+    static int last_x = 0, last_y = 0;

+    int x, y;

+    TXT_GetMousePosition(&x, &y);

+    if (x != last_x || y != last_y)

+    {

+        last_x = x; last_y = y;

+        return 1;

+    }

+    else

+    {

+        return 0;

+    }

+}

 signed int TXT_GetChar(void)

     SDL_Event ev;

@@ -509,6 +527,12 @@

             case SDL_QUIT:

                 // Quit = escape

                 return 27;

+            case SDL_MOUSEMOTION:

+                if (MouseHasMoved())

+                {

+                    return 0;

+                }

             default:

                 break;

--- a/textscreen/txt_separator.c

+++ b/textscreen/txt_separator.c

@@ -65,7 +65,7 @@

         TXT_GotoXY(x, y);

-        TXT_BGColor(TXT_COLOR_BLUE, 0);

+        TXT_BGColor(TXT_WINDOW_BACKGROUND, 0);

         TXT_FGColor(TXT_COLOR_BRIGHT_GREEN);

         TXT_DrawString(" ");

         TXT_DrawString(separator->label);

--- a/textscreen/txt_spinctrl.c

+++ b/textscreen/txt_spinctrl.c

@@ -149,7 +149,7 @@

     unsigned int padding;

     TXT_FGColor(TXT_COLOR_BRIGHT_CYAN);

-    TXT_BGColor(TXT_COLOR_BLUE, 0);

+    TXT_BGColor(TXT_WINDOW_BACKGROUND, 0);

     TXT_DrawString("\x1b ");

@@ -161,13 +161,9 @@

         TXT_BGColor(TXT_COLOR_BLACK, 0);

-    else if (selected)

-    {

-        TXT_BGColor(TXT_COLOR_GREY, 0);

-    }

     else

-        TXT_BGColor(TXT_COLOR_BLUE, 0);

+        TXT_SetWidgetBG(spincontrol, selected);

     if (!spincontrol->editing)

@@ -195,7 +191,7 @@

     TXT_FGColor(TXT_COLOR_BRIGHT_CYAN);

-    TXT_BGColor(TXT_COLOR_BLUE, 0);

+    TXT_BGColor(TXT_WINDOW_BACKGROUND, 0);

     TXT_DrawString(" \x1a");

--- a/textscreen/txt_table.c

+++ b/textscreen/txt_table.c

@@ -173,6 +173,10 @@

                              sizeof(txt_widget_t *) * (table->num_widgets + 1));

     table->widgets[table->num_widgets] = widget;

     ++table->num_widgets;

+    // Maintain parent pointer.

+    widget->parent = &table->widget;

 // Add multiple widgets to a table.

--- a/textscreen/txt_widget.c

+++ b/textscreen/txt_widget.c

@@ -24,6 +24,8 @@

 #include "txt_io.h"

 #include "txt_widget.h"

+#include "txt_gui.h"

+#include "txt_desktop.h"

 typedef struct

@@ -82,6 +84,7 @@

     widget->widget_class = widget_class;

     widget->callback_table = TXT_NewCallbackTable();

+    widget->parent = NULL;

     // Visible by default.

@@ -234,6 +237,65 @@

     else

         return 0;

+    }

+}

+int TXT_ContainsWidget(TXT_UNCAST_ARG(haystack), TXT_UNCAST_ARG(needle))

+{

+    TXT_CAST_ARG(txt_widget_t, haystack);

+    TXT_CAST_ARG(txt_widget_t, needle);

+    while (needle != NULL)

+    {

+        if (needle == haystack)

+        {

+            return 1;

+        }

+        needle = needle->parent;

+    }

+    return 0;

+}

+int TXT_HoveringOverWidget(TXT_UNCAST_ARG(widget))

+{

+    TXT_CAST_ARG(txt_widget_t, widget);

+    txt_window_t *active_window;

+    int x, y;

+    // We can only be hovering over widgets in the active window.

+    active_window = TXT_GetActiveWindow();

+    if (active_window == NULL || !TXT_ContainsWidget(active_window, widget))

+    {

+        return 0;

+    }

+    // Is the mouse cursor within the bounds of the widget?

+    TXT_GetMousePosition(&x, &y);

+    return (x >= widget->x && x < widget->x + widget->w

+         && y >= widget->y && y < widget->y + widget->h);

+}

+void TXT_SetWidgetBG(TXT_UNCAST_ARG(widget), int selected)

+{

+    TXT_CAST_ARG(txt_widget_t, widget);

+    if (selected)

+    {

+        TXT_BGColor(TXT_COLOR_GREY, 0);

+    }

+    else if (TXT_HoveringOverWidget(widget))

+    {

+        TXT_BGColor(TXT_HOVER_BACKGROUND, 0);

+    }

+    else

+    {

+        TXT_BGColor(TXT_WINDOW_BACKGROUND, 0);

--- a/textscreen/txt_widget.h

+++ b/textscreen/txt_widget.h

@@ -102,6 +102,10 @@

     int x, y;

     unsigned int w, h;

+    // Pointer up to parent widget that contains this widget.

+    txt_widget_t *parent;

};

 void TXT_InitWidget(TXT_UNCAST_ARG(widget), txt_widget_class_t *widget_class);

@@ -146,6 +150,34 @@

 int TXT_SelectableWidget(TXT_UNCAST_ARG(widget));

-#endif /* #ifndef TXT_WIDGET_H */

+/**

+ * Query whether the mouse is hovering over the specified widget.

+ *

+ * @param widget       The widget.

+ * @return             Non-zero if the mouse cursor is over the widget.

+ */

+int TXT_HoveringOverWidget(TXT_UNCAST_ARG(widget));

+/**

+ * Set the background to draw the specified widget, depending on

+ * whether it is selected and the mouse is hovering over it.

+ *

+ * @param widget       The widget.

+ * @param selected     Whether the widget is selected.

+ */

+void TXT_SetWidgetBG(TXT_UNCAST_ARG(widget), int selected);

+/**

+ * Query whether the specified widget is contained within another

+ * widget.

+ *

+ * @param haystack     The widget that might contain needle.

+ * @param needle       The widget being queried.

+ */

+int TXT_ContainsWidget(TXT_UNCAST_ARG(haystack), TXT_UNCAST_ARG(needle));

+#endif /* #ifndef TXT_WIDGET_H */

--- a/textscreen/txt_window.c

+++ b/textscreen/txt_window.c

@@ -40,6 +40,10 @@

     window->actions[position] = action;

+    // Maintain parent pointer.

+    action->widget.parent = &window->table.widget;

 txt_window_t *TXT_NewWindow(char *title)

@@ -158,7 +162,7 @@

         TXT_CalcWidgetSize(widget);

-        widget->x = window->window_x + 2;

+        widget->x = window->window_x + 1;

         widget->y = window->window_y + window->window_h - widget->h - 1;

         // Adjust available space:

@@ -175,7 +179,7 @@

         TXT_CalcWidgetSize(widget);

-        widget->x = window->window_x + window->window_w - 2 - widget->w;

+        widget->x = window->window_x + window->window_w - 1 - widget->w;

         widget->y = window->window_y + window->window_h - widget->h - 1;

         // Adjust available space:

--- a/textscreen/txt_window_action.c

+++ b/textscreen/txt_window_action.c

@@ -37,9 +37,10 @@

     TXT_GetKeyDescription(action->key, buf);

-    // Minimum width is the string length + two spaces for padding

+    // Width is label length, plus key description length, plus '='

+    // and two surrounding spaces.

-    action->widget.w = strlen(action->label) + strlen(buf) + 1;

+    action->widget.w = strlen(action->label) + strlen(buf) + 3;

     action->widget.h = 1;

@@ -50,12 +51,24 @@

     TXT_GetKeyDescription(action->key, buf);

+    if (TXT_HoveringOverWidget(action))

+    {

+        TXT_BGColor(TXT_COLOR_BLACK, 0);

+    }

+    else

+    {

+        TXT_BGColor(TXT_WINDOW_BACKGROUND, 0);

+    }

+    TXT_DrawString(" ");

     TXT_FGColor(TXT_COLOR_BRIGHT_GREEN);

     TXT_DrawString(buf);

     TXT_FGColor(TXT_COLOR_BRIGHT_CYAN);

     TXT_DrawString("=");

     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);

     TXT_DrawString(action->label);

+    TXT_DrawString(" ");

 static void TXT_WindowActionDestructor(TXT_UNCAST_ARG(action))