diff options
Diffstat (limited to 'prev/gtkpopover/main.c')
| -rw-r--r-- | prev/gtkpopover/main.c | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/prev/gtkpopover/main.c b/prev/gtkpopover/main.c deleted file mode 100644 index 09c62e0..0000000 --- a/prev/gtkpopover/main.c +++ /dev/null @@ -1,201 +0,0 @@ -// 10 october 2014 -// #qo pkg-config: gtk+-3.0 -#define GLIB_VERSION_MIN_REQUIRED GLIB_VERSION_2_32 -#define GLIB_VERSION_MAX_ALLOWED GLIB_VERSION_2_32 -#define GDK_VERSION_MIN_REQUIRED GDK_VERSION_3_4 -#define GDK_VERSION_MAX_ALLOWED GDK_VERSION_3_4 -#include <gtk/gtk.h> - -typedef gint LONG; - -typedef struct POINT POINT; - -struct POINT { - LONG x; - LONG y; -}; - -struct popover { - void *gopopover; - - // a nice consequence of this design is that it allows four arrowheads to jut out at once; in practice only one will ever be used, but hey — simple implementation! - LONG arrowLeft; - LONG arrowRight; - LONG arrowTop; - LONG arrowBottom; -}; - -struct popover _p = { NULL, -1, -1, 20, -1 }; -struct popover *p = &_p; - -#define ARROWHEIGHT 8 -#define ARROWWIDTH 8 /* should be the same for smooth lines */ - -void makePopoverPath(cairo_t *cr, LONG width, LONG height) -{ - POINT pt[20]; - int n; - LONG xmax, ymax; - - cairo_new_path(cr); - n = 0; - - // figure out the xmax and ymax of the box - xmax = width; - if (p->arrowRight >= 0) - xmax -= ARROWWIDTH; - ymax = height; - if (p->arrowBottom >= 0) - ymax -= ARROWHEIGHT; - - // the first point is either at (0,0), (0,arrowHeight), (arrowWidth,0), or (arrowWidth,arrowHeight) - pt[n].x = 0; - if (p->arrowLeft >= 0) - pt[n].x = ARROWWIDTH; - pt[n].y = 0; - if (p->arrowTop >= 0) - pt[n].y = ARROWHEIGHT; - n++; - - // the left side - pt[n].x = pt[n - 1].x; - if (p->arrowLeft >= 0) { - pt[n].y = pt[n - 1].y + p->arrowLeft; - n++; - pt[n].x = pt[n - 1].x - ARROWWIDTH; - pt[n].y = pt[n - 1].y + ARROWHEIGHT; - n++; - pt[n].x = pt[n - 1].x + ARROWWIDTH; - pt[n].y = pt[n - 1].y + ARROWHEIGHT; - n++; - pt[n].x = pt[n - 1].x; - } - pt[n].y = ymax; - n++; - - // the bottom side - pt[n].y = pt[n - 1].y; - if (p->arrowBottom >= 0) { - pt[n].x = pt[n - 1].x + p->arrowBottom; - n++; - pt[n].x = pt[n - 1].x + ARROWWIDTH; - pt[n].y = pt[n - 1].y + ARROWHEIGHT; - n++; - pt[n].x = pt[n - 1].x + ARROWWIDTH; - pt[n].y = pt[n - 1].y - ARROWHEIGHT; - n++; - pt[n].y = pt[n - 1].y; - } - pt[n].x = xmax; - n++; - - // the right side - pt[n].x = pt[n - 1].x; - if (p->arrowRight >= 0) { - pt[n].y = pt[0].y + p->arrowRight + (ARROWHEIGHT * 2); - n++; - pt[n].x = pt[n - 1].x + ARROWWIDTH; - pt[n].y = pt[n - 1].y - ARROWHEIGHT; - n++; - pt[n].x = pt[n - 1].x - ARROWWIDTH; - pt[n].y = pt[n - 1].y - ARROWHEIGHT; - n++; - pt[n].x = pt[n - 1].x; - } - pt[n].y = pt[0].y; - n++; - - // the top side - pt[n].y = pt[n - 1].y; - if (p->arrowTop >= 0) { - pt[n].x = pt[0].x + p->arrowTop + (ARROWWIDTH * 2); - n++; - pt[n].x = pt[n - 1].x - ARROWWIDTH; - pt[n].y = pt[n - 1].y - ARROWHEIGHT; - n++; - pt[n].x = pt[n - 1].x - ARROWWIDTH; - pt[n].y = pt[n - 1].y + ARROWHEIGHT; - n++; - pt[n].y = pt[n - 1].y; - } - pt[n].x = pt[0].x; - n++; - - int i; - - // TODO right and bottom edge - cairo_set_line_width(cr, 1); - cairo_move_to(cr, pt[0].x + 0.5, pt[0].y + 0.5); - for (i = 1; i < n; i++) - cairo_line_to(cr, pt[i].x + 0.5, pt[i].y + 0.5); -} - -void drawPopoverFrame(GtkWidget *widget, cairo_t *cr, LONG width, LONG height, int forceAlpha) -{ - GtkStyleContext *context; - GdkRGBA background, border; - - // TODO see what GtkPopover itself does - // TODO drop shadow - context = gtk_widget_get_style_context(widget); - gtk_style_context_add_class(widget, GTK_STYLE_CLASS_BACKGROUND); - gtk_style_context_get_background_color(context, GTK_STATE_FLAG_NORMAL, &background); - gtk_style_context_get_border_color(context, GTK_STATE_FLAG_NORMAL, &border); - if (forceAlpha) { - background.alpha = 1; - border.alpha = 1; - } - makePopoverPath(cr, width, height); - cairo_set_source_rgba(cr, background.red, background.green, background.blue, background.alpha); - cairo_fill_preserve(cr); - cairo_set_source_rgba(cr, border.red, border.green, border.blue, border.alpha); - cairo_stroke(cr); -} - -gboolean popoverDraw(GtkWidget *widget, cairo_t *cr, gpointer data) -{ - gint width, height; - - width = gtk_widget_get_allocated_width(widget); - height = gtk_widget_get_allocated_height(widget); - drawPopoverFrame(widget, cr, width, height, 0); - return FALSE; -} - -void popoverSetSize(GtkWidget *widget, LONG width, LONG height) -{ - GdkWindow *gdkwin; - cairo_t *cr; - cairo_surface_t *cs; - cairo_region_t *region; - - gtk_window_resize(GTK_WINDOW(widget), width, height); - gdkwin = gtk_widget_get_window(widget); - gdk_window_shape_combine_region(gdkwin, NULL, 0, 0); - // TODO check errors - cs = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height); - cr = cairo_create(cs); - drawPopoverFrame(widget, cr, width, height, 1); - region = gdk_cairo_region_create_from_surface(cs); - gdk_window_shape_combine_region(gdkwin, region, 0, 0); - cairo_destroy(cr); - cairo_surface_destroy(cs); -} - -int main(void) -{ - GtkWidget *w; - - gtk_init(NULL, NULL); - w = gtk_window_new(GTK_WINDOW_POPUP); - gtk_window_set_decorated(GTK_WINDOW(w), FALSE); - gtk_widget_set_app_paintable(w, TRUE); - g_signal_connect(w, "draw", G_CALLBACK(popoverDraw), NULL); - gtk_widget_set_has_window(w, TRUE); - gtk_widget_realize(w); - popoverSetSize(w, 200, 200); - gtk_window_move(GTK_WINDOW(w), 50, 50); - gtk_widget_show_all(w); - gtk_main(); - return 0; -} |