forked from AuroraMiddleware/gtk
colorplane: Refactor create_texture()
Create a R8G8B8 texture here so we don't waste memory and do work for an alpha channel we don't care about.
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76e4002226
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663ae67935
@ -121,50 +121,43 @@ plane_snapshot (GtkWidget *widget,
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}
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static void
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create_texture (GtkColorPlane *plane)
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create_texture (GtkWidget *widget)
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{
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GtkWidget *widget = GTK_WIDGET (plane);
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const int width = gtk_widget_get_width (widget);
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const int height = gtk_widget_get_height (widget);
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const int stride = width * 3;
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GtkColorPlane *plane = GTK_COLOR_PLANE (widget);
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GBytes *bytes;
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int width, height, stride;
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guint red, green, blue;
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guint32 *data, *p;
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float h, s, v;
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float r, g, b;
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double sf, vf;
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int x, y;
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guint8 *data;
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if (!gtk_widget_get_realized (widget))
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if (!gtk_widget_get_mapped (widget))
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return;
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width = gtk_widget_get_width (widget);
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height = gtk_widget_get_height (widget);
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if (width == 0 || height == 0)
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return;
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g_clear_object (&plane->texture);
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stride = width * 4;
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data = g_malloc (height * stride);
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if (width > 1 && height > 1)
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{
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h = gtk_adjustment_get_value (plane->h_adj);
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sf = 1.0 / (height - 1);
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vf = 1.0 / (width - 1);
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const float h = gtk_adjustment_get_value (plane->h_adj);
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int x, y;
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for (y = 0; y < height; y++)
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{
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s = CLAMP (1.0 - y * sf, 0.0, 1.0);
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p = data + y * (stride / 4);
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const float s = 1.0 - (float)y / (height - 1);
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for (x = 0; x < width; x++)
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{
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v = x * vf;
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const float v = (float)x / (width - 1);
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float r, g, b;
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gtk_hsv_to_rgb (h, s, v, &r, &g, &b);
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red = CLAMP (r * 255, 0, 255);
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green = CLAMP (g * 255, 0, 255);
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blue = CLAMP (b * 255, 0, 255);
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p[x] = (0xff << 24) | (red << 16) | (green << 8) | blue;
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data[(y * stride) + (x * 3) + 0] = r * 255;
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data[(y * stride) + (x * 3) + 1] = g * 255;
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data[(y * stride) + (x * 3) + 2] = b * 255;
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}
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}
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}
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@ -175,7 +168,7 @@ create_texture (GtkColorPlane *plane)
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bytes = g_bytes_new_take (data, height * stride);
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plane->texture = gdk_memory_texture_new (width, height,
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GDK_MEMORY_DEFAULT,
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GDK_MEMORY_R8G8B8,
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bytes,
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stride);
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g_bytes_unref (bytes);
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@ -187,9 +180,7 @@ plane_size_allocate (GtkWidget *widget,
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int height,
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int baseline)
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{
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GtkColorPlane *plane = GTK_COLOR_PLANE (widget);
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create_texture (plane);
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create_texture (widget);
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}
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static void
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@ -197,7 +188,7 @@ plane_realize (GtkWidget *widget)
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{
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GTK_WIDGET_CLASS (gtk_color_plane_parent_class)->realize (widget);
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create_texture (GTK_COLOR_PLANE (widget));
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create_texture (widget);
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}
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static void
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@ -221,10 +212,10 @@ set_cross_cursor (GtkWidget *widget,
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}
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static void
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h_changed (GtkColorPlane *plane)
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h_changed (GtkWidget *plane)
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{
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create_texture (plane);
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gtk_widget_queue_draw (GTK_WIDGET (plane));
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gtk_widget_queue_draw (plane);
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}
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static void
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