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libsysprof-gtk: move flip-y to SysprofXYLayer

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So that we can use it to perform value coordinate flipping on multiple
charts and graphs.
This commit is contained in:
Christian Hergert
2023-06-28 12:36:05 -07:00
parent dc3d237edb
commit 712013a91a
5 changed files with 81 additions and 51 deletions
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37
src/libsysprof-gtk/sysprof-column-layer.c
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@ -53,7 +53,6 @@ sysprof_column_layer_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
SysprofColumnLayer *self = (SysprofColumnLayer *)widget;
graphene_matrix_t flip_y;
const float *x_values;
const float *y_values;
const GdkRGBA *color;
@ -79,8 +78,13 @@ sysprof_column_layer_snapshot (GtkWidget *widget,
gtk_snapshot_save (snapshot);
graphene_matrix_init_from_2d (&flip_y, 1, 0, 0, -1, 0, height);
gtk_snapshot_transform_matrix (snapshot, &flip_y);
if (!sysprof_xy_layer_get_flip_y (SYSPROF_XY_LAYER (self)))
{
graphene_matrix_t flip_y;
graphene_matrix_init_from_2d (&flip_y, 1, 0, 0, -1, 0, height);
gtk_snapshot_transform_matrix (snapshot, &flip_y);
}
for (guint i = 0; i < n_values; i++)
{
@ -106,6 +110,8 @@ sysprof_column_layer_get_index_at_coord (SysprofColumnLayer *self,
graphene_point_t point;
const float *x_values;
const float *y_values;
gboolean flip_y;
guint best = GTK_INVALID_LIST_POSITION;
guint n_values;
int width;
int height;
@ -114,6 +120,7 @@ sysprof_column_layer_get_index_at_coord (SysprofColumnLayer *self,
width = gtk_widget_get_width (GTK_WIDGET (self));
height = gtk_widget_get_height (GTK_WIDGET (self));
flip_y = sysprof_xy_layer_get_flip_y (SYSPROF_XY_LAYER (self));
_sysprof_xy_layer_get_xy (SYSPROF_XY_LAYER (self), &x_values, &y_values, &n_values);
@ -124,7 +131,18 @@ sysprof_column_layer_get_index_at_coord (SysprofColumnLayer *self,
for (guint i = 0; i < n_values; i++)
{
graphene_rect_t rect = GRAPHENE_RECT_INIT (x_values[i]*width, height, 1, -(y_values[i]*height));
graphene_rect_t rect;
if (flip_y)
rect = GRAPHENE_RECT_INIT (x_values[i]*width,
0,
1,
y_values[i]*height);
else
rect = GRAPHENE_RECT_INIT (x_values[i]*width,
height - y_values[i]*height,
1,
y_values[i]*height);
if (graphene_rect_contains_point (&rect, &point))
{
@ -133,9 +151,18 @@ sysprof_column_layer_get_index_at_coord (SysprofColumnLayer *self,
return i;
}
if (rect.origin.x <= x &&
rect.origin.x + rect.size.width >= x)
{
if (area != NULL)
*area = rect;
best = i;
}
}
return GTK_INVALID_LIST_POSITION;
return best;
}
static void