diff options
| -rw-r--r-- | textscreen/examples/guitest.c | 2 | ||||
| -rw-r--r-- | textscreen/txt_desktop.c | 85 | ||||
| -rw-r--r-- | textscreen/txt_desktop.h | 2 | ||||
| -rw-r--r-- | textscreen/txt_gui.c | 4 | ||||
| -rw-r--r-- | textscreen/txt_window.c | 74 | ||||
| -rw-r--r-- | textscreen/txt_window.h | 22 |
6 files changed, 167 insertions, 22 deletions
diff --git a/textscreen/examples/guitest.c b/textscreen/examples/guitest.c index 04d580c9..46060bf0 100644 --- a/textscreen/examples/guitest.c +++ b/textscreen/examples/guitest.c @@ -96,6 +96,8 @@ void SetupWindow(void) window = TXT_NewWindow("Window test"); + TXT_SetWindowHelpURL(window, "https://www.youtube.com/watch?v=dQw4w9WgXcQ"); + TXT_AddWidget(window, TXT_NewSeparator("Main section")); table = TXT_NewTable(3); diff --git a/textscreen/txt_desktop.c b/textscreen/txt_desktop.c index 4c9cf5c1..e56a5ee4 100644 --- a/textscreen/txt_desktop.c +++ b/textscreen/txt_desktop.c @@ -25,6 +25,7 @@ #include "txt_separator.h" #include "txt_window.h" +#define HELP_KEY KEY_F1 #define MAXWINDOWS 128 static char *desktop_title; @@ -188,6 +189,37 @@ static void DrawDesktopBackground(const char *title) TXT_Puts(title); } +static void DrawHelpIndicator(void) +{ + char keybuf[10]; + int fgcolor; + int x, y; + + TXT_GetKeyDescription(HELP_KEY, keybuf, sizeof(keybuf)); + + TXT_GetMousePosition(&x, &y); + + if (y == 0 && x >= TXT_SCREEN_W - 9) + { + fgcolor = TXT_COLOR_GREY; + TXT_BGColor(TXT_COLOR_BLACK, 0); + } + else + { + fgcolor = TXT_COLOR_BLACK; + TXT_BGColor(TXT_COLOR_GREY, 0); + } + + TXT_GotoXY(TXT_SCREEN_W - 9, 0); + + TXT_FGColor(TXT_COLOR_BRIGHT_WHITE); + TXT_DrawString(" "); + TXT_DrawString(keybuf); + + TXT_FGColor(fgcolor); + TXT_DrawString("=Help "); +} + void TXT_SetDesktopTitle(char *title) { free(desktop_title); @@ -197,8 +229,9 @@ void TXT_SetDesktopTitle(char *title) void TXT_DrawDesktop(void) { - int i; + txt_window_t *active_window; const char *title; + int i; TXT_InitClipArea(); @@ -209,6 +242,12 @@ void TXT_DrawDesktop(void) DrawDesktopBackground(title); + active_window = TXT_GetActiveWindow(); + if (active_window != NULL && active_window->help_url != NULL) + { + DrawHelpIndicator(); + } + for (i=0; i<num_windows; ++i) { TXT_DrawWindow(all_windows[i]); @@ -217,17 +256,53 @@ void TXT_DrawDesktop(void) TXT_UpdateScreen(); } +// Fallback function to handle key/mouse events that are not handled by +// the active window. +static void DesktopInputEvent(int c) +{ + txt_window_t *active_window; + int x, y; + + switch (c) + { + case TXT_MOUSE_LEFT: + TXT_GetMousePosition(&x, &y); + + // Clicking the top-right of the screen is equivalent + // to pressing the help key. + if (y == 0 && x >= TXT_SCREEN_W - 9) + { + DesktopInputEvent(HELP_KEY); + } + break; + + case HELP_KEY: + active_window = TXT_GetActiveWindow(); + if (active_window != NULL) + { + TXT_OpenWindowHelpURL(active_window); + } + break; + + default: + break; + } + + +} + void TXT_DispatchEvents(void) { + txt_window_t *active_window; int c; while ((c = TXT_GetChar()) > 0) { - if (num_windows > 0) - { - // Send the keypress to the top window + active_window = TXT_GetActiveWindow(); - TXT_WindowKeyPress(all_windows[num_windows - 1], c); + if (active_window != NULL && !TXT_WindowKeyPress(active_window, c)) + { + DesktopInputEvent(c); } } } diff --git a/textscreen/txt_desktop.h b/textscreen/txt_desktop.h index 07164c89..3c6cf12b 100644 --- a/textscreen/txt_desktop.h +++ b/textscreen/txt_desktop.h @@ -31,7 +31,7 @@ void TXT_DrawDesktop(void); void TXT_DispatchEvents(void); void TXT_DrawWindow(txt_window_t *window); void TXT_SetWindowFocus(txt_window_t *window, int focused); -void TXT_WindowKeyPress(txt_window_t *window, int c); +int TXT_WindowKeyPress(txt_window_t *window, int c); /** * Set the title displayed at the top of the screen. diff --git a/textscreen/txt_gui.c b/textscreen/txt_gui.c index 74e3ec75..bc7017a8 100644 --- a/textscreen/txt_gui.c +++ b/textscreen/txt_gui.c @@ -488,8 +488,8 @@ void TXT_InitClipArea(void) cliparea = malloc(sizeof(txt_cliparea_t)); cliparea->x1 = 0; cliparea->x2 = TXT_SCREEN_W; - cliparea->y1 = 1; - cliparea->y2 = TXT_SCREEN_H - 1; + cliparea->y1 = 0; + cliparea->y2 = TXT_SCREEN_H; cliparea->next = NULL; } } diff --git a/textscreen/txt_window.c b/textscreen/txt_window.c index 7fe83662..7b2e3568 100644 --- a/textscreen/txt_window.c +++ b/textscreen/txt_window.c @@ -70,6 +70,7 @@ txt_window_t *TXT_NewWindow(char *title) win->vert_align = TXT_VERT_CENTER; win->key_listener = NULL; win->mouse_listener = NULL; + win->help_url = NULL; TXT_AddWidget(win, TXT_NewSeparator(NULL)); @@ -365,7 +366,7 @@ void TXT_SetWindowPosition(txt_window_t *window, window->y = y; } -static void MouseButtonPress(txt_window_t *window, int b) +static int MouseButtonPress(txt_window_t *window, int b) { int x, y; int i; @@ -375,7 +376,7 @@ static void MouseButtonPress(txt_window_t *window, int b) // Lay out the window, set positions and sizes of all widgets TXT_LayoutWindow(window); - + // Get the current mouse position TXT_GetMousePosition(&x, &y); @@ -390,10 +391,10 @@ static void MouseButtonPress(txt_window_t *window, int b) if (window->mouse_listener(window, x, y, b, window->mouse_listener_data)) { - return; + return 1; } } - + // Is it within the table range? widgets = (txt_widget_t *) window; @@ -402,7 +403,7 @@ static void MouseButtonPress(txt_window_t *window, int b) && y >= widgets->y && y < (signed) (widgets->y + widgets->h)) { TXT_WidgetMousePress(window, x, y, b); - return; + return 1; } // Was one of the action area buttons pressed? @@ -429,21 +430,22 @@ static void MouseButtonPress(txt_window_t *window, int b) // Pass through mouse press. TXT_WidgetMousePress(widget, x, y, b); - return; + return 1; } } + + return 0; } -void TXT_WindowKeyPress(txt_window_t *window, int c) +int TXT_WindowKeyPress(txt_window_t *window, int c) { int i; // Is this a mouse button ? - + if (c >= TXT_MOUSE_BASE && c < TXT_MOUSE_BASE + TXT_MAX_MOUSE_BUTTONS) { - MouseButtonPress(window, c); - return; + return MouseButtonPress(window, c); } // Try the window key spy @@ -454,15 +456,15 @@ void TXT_WindowKeyPress(txt_window_t *window, int c) if (window->key_listener(window, c, window->key_listener_data)) { - return; + return 1; } } - // Send to the currently selected widget + // Send to the currently selected widget: if (TXT_WidgetKeyPress(window, c)) { - return; + return 1; } // Try all of the action buttons @@ -472,9 +474,11 @@ void TXT_WindowKeyPress(txt_window_t *window, int c) if (window->actions[i] != NULL && TXT_WidgetKeyPress(window->actions[i], c)) { - return; + return 1; } } + + return 0; } void TXT_SetKeyListener(txt_window_t *window, TxtWindowKeyPress key_listener, @@ -497,6 +501,48 @@ void TXT_SetWindowFocus(txt_window_t *window, int focused) TXT_SetWidgetFocus(window, focused); } +void TXT_SetWindowHelpURL(txt_window_t *window, char *help_url) +{ + window->help_url = help_url; +} + +void TXT_OpenURL(char *url) +{ + char *cmd; + size_t cmd_len; + + cmd_len = strlen(url) + 30; + cmd = malloc(cmd_len); + +#if defined(_WIN32) + TXT_snprintf(cmd, cmd_len, "start \"%s\"", url); +#elif defined(__MACOSX__) + TXT_snprintf(cmd, cmd_len, "open \"%s\"", url); +#else + // The Unix situation sucks as usual, but the closest thing to a + // standard that exists is the xdg-utils package. + if (system("xdg-open --version 2>/dev/null") != 0) + { + fprintf(stderr, + "xdg-utils is not installed. Can't open this URL:\n%s\n", url); + return; + } + + TXT_snprintf(cmd, cmd_len, "xdg-open \"%s\"", url); +#endif + + system(cmd); + free(cmd); +} + +void TXT_OpenWindowHelpURL(txt_window_t *window) +{ + if (window->help_url != NULL) + { + TXT_OpenURL(window->help_url); + } +} + txt_window_t *TXT_MessageBox(char *title, char *message, ...) { txt_window_t *window; diff --git a/textscreen/txt_window.h b/textscreen/txt_window.h index 4d1ec991..412bad4f 100644 --- a/textscreen/txt_window.h +++ b/textscreen/txt_window.h @@ -85,6 +85,10 @@ struct txt_window_s int window_x, window_y; unsigned int window_w, window_h; + + // URL of a webpage with help about this window. If set, a help key + // indicator is shown while this window is active. + char *help_url; }; /** @@ -194,5 +198,23 @@ void TXT_SetMouseListener(txt_window_t *window, txt_window_t *TXT_MessageBox(char *title, char *message, ...); +/** + * Set the help URL for the given window. + * + * @param window The window. + * @param help_url String containing URL of the help page for this + * window, or NULL to set no help for this window. + */ + +void TXT_SetWindowHelpURL(txt_window_t *window, char *help_url); + +/** + * Open the help URL for the given window, if one is set. + * + * @param window The window. + */ + +void TXT_OpenWindowHelpURL(txt_window_t *window); + #endif /* #ifndef TXT_WINDOW_H */ |