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|
/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2010 Blender Foundation. All rights reserved. */
/** \file
* \ingroup wm
*
* Our own drag-and-drop, drag state and drop boxes.
*/
#include <string.h>
#include "DNA_screen_types.h"
#include "DNA_space_types.h"
#include "DNA_windowmanager_types.h"
#include "MEM_guardedalloc.h"
#include "BLT_translation.h"
#include "BLI_bitmap.h"
#include "BLI_blenlib.h"
#include "BLI_math_color.h"
#include "BIF_glutil.h"
#include "BKE_context.h"
#include "BKE_global.h"
#include "BKE_idprop.h"
#include "BKE_idtype.h"
#include "BKE_lib_id.h"
#include "BKE_main.h"
#include "BKE_screen.h"
#include "GHOST_C-api.h"
#include "BLO_readfile.h"
#include "ED_asset.h"
#include "ED_screen.h"
#include "GPU_shader.h"
#include "GPU_state.h"
#include "GPU_viewport.h"
#include "IMB_imbuf_types.h"
#include "UI_interface.h"
#include "UI_interface_icons.h"
#include "UI_resources.h"
#include "RNA_access.h"
#include "WM_api.h"
#include "WM_types.h"
#include "wm_event_system.h"
#include "wm_window.h"
/* ****************************************************** */
static ListBase dropboxes = {NULL, NULL};
static void wm_drag_free_asset_data(wmDragAsset **asset_data);
/* drop box maps are stored global for now */
/* these are part of blender's UI/space specs, and not like keymaps */
/* when editors become configurable, they can add own dropbox definitions */
typedef struct wmDropBoxMap {
struct wmDropBoxMap *next, *prev;
ListBase dropboxes;
short spaceid, regionid;
char idname[KMAP_MAX_NAME];
} wmDropBoxMap;
ListBase *WM_dropboxmap_find(const char *idname, int spaceid, int regionid)
{
LISTBASE_FOREACH (wmDropBoxMap *, dm, &dropboxes) {
if (dm->spaceid == spaceid && dm->regionid == regionid) {
if (STREQLEN(idname, dm->idname, KMAP_MAX_NAME)) {
return &dm->dropboxes;
}
}
}
wmDropBoxMap *dm = MEM_callocN(sizeof(struct wmDropBoxMap), "dropmap list");
BLI_strncpy(dm->idname, idname, KMAP_MAX_NAME);
dm->spaceid = spaceid;
dm->regionid = regionid;
BLI_addtail(&dropboxes, dm);
return &dm->dropboxes;
}
wmDropBox *WM_dropbox_add(ListBase *lb,
const char *idname,
bool (*poll)(bContext *, wmDrag *, const wmEvent *),
void (*copy)(bContext *, wmDrag *, wmDropBox *),
void (*cancel)(struct Main *, wmDrag *, wmDropBox *),
WMDropboxTooltipFunc tooltip)
{
wmDropBox *drop = MEM_callocN(sizeof(wmDropBox), "wmDropBox");
drop->poll = poll;
drop->copy = copy;
drop->cancel = cancel;
drop->tooltip = tooltip;
drop->ot = WM_operatortype_find(idname, 0);
if (drop->ot == NULL) {
MEM_freeN(drop);
printf("Error: dropbox with unknown operator: %s\n", idname);
return NULL;
}
WM_operator_properties_alloc(&(drop->ptr), &(drop->properties), idname);
BLI_addtail(lb, drop);
return drop;
}
void wm_dropbox_free(void)
{
LISTBASE_FOREACH (wmDropBoxMap *, dm, &dropboxes) {
LISTBASE_FOREACH (wmDropBox *, drop, &dm->dropboxes) {
if (drop->ptr) {
WM_operator_properties_free(drop->ptr);
MEM_freeN(drop->ptr);
}
}
BLI_freelistN(&dm->dropboxes);
}
BLI_freelistN(&dropboxes);
}
/* *********************************** */
static void wm_dropbox_invoke(bContext *C, wmDrag *drag)
{
wmWindowManager *wm = CTX_wm_manager(C);
/* Create a bitmap flag matrix of all currently visible region and area types.
* Everything that isn't visible in the current window should not prefetch any data. */
bool area_region_tag[SPACE_TYPE_NUM][RGN_TYPE_NUM] = {{false}};
LISTBASE_FOREACH (wmWindow *, win, &wm->windows) {
bScreen *screen = WM_window_get_active_screen(win);
ED_screen_areas_iter (win, screen, area) {
LISTBASE_FOREACH (ARegion *, region, &area->regionbase) {
if (region->visible) {
BLI_assert(area->spacetype < SPACE_TYPE_NUM);
BLI_assert(region->regiontype < RGN_TYPE_NUM);
area_region_tag[area->spacetype][region->regiontype] = true;
}
}
}
}
LISTBASE_FOREACH (wmDropBoxMap *, dm, &dropboxes) {
if (!area_region_tag[dm->spaceid][dm->regionid]) {
continue;
}
LISTBASE_FOREACH (wmDropBox *, drop, &dm->dropboxes) {
if (drag->drop_state.ui_context) {
CTX_store_set(C, drag->drop_state.ui_context);
}
if (drop->on_drag_start) {
drop->on_drag_start(C, drag);
}
CTX_store_set(C, NULL);
}
}
}
wmDrag *WM_event_start_drag(
struct bContext *C, int icon, int type, void *poin, double value, unsigned int flags)
{
wmWindowManager *wm = CTX_wm_manager(C);
wmDrag *drag = MEM_callocN(sizeof(struct wmDrag), "new drag");
/* Keep track of future multi-touch drag too, add a mouse-pointer id or so. */
/* if multiple drags are added, they're drawn as list */
BLI_addtail(&wm->drags, drag);
drag->flags = flags;
drag->icon = icon;
drag->type = type;
switch (type) {
case WM_DRAG_PATH:
BLI_strncpy(drag->path, poin, FILE_MAX);
/* As the path is being copied, free it immediately as `drag` won't "own" the data. */
if (flags & WM_DRAG_FREE_DATA) {
MEM_freeN(poin);
}
break;
case WM_DRAG_ID:
if (poin) {
WM_drag_add_local_ID(drag, poin, NULL);
}
break;
case WM_DRAG_ASSET:
case WM_DRAG_ASSET_CATALOG:
/* Move ownership of poin to wmDrag. */
drag->poin = poin;
drag->flags |= WM_DRAG_FREE_DATA;
break;
/* The asset-list case is special: We get multiple assets from context and attach them to the
* drag item. */
case WM_DRAG_ASSET_LIST: {
const AssetLibraryReference *asset_library = CTX_wm_asset_library_ref(C);
ListBase asset_file_links = CTX_data_collection_get(C, "selected_asset_files");
LISTBASE_FOREACH (const CollectionPointerLink *, link, &asset_file_links) {
const FileDirEntry *asset_file = link->ptr.data;
const AssetHandle asset_handle = {asset_file};
WM_drag_add_asset_list_item(drag, C, asset_library, &asset_handle);
}
BLI_freelistN(&asset_file_links);
break;
}
default:
drag->poin = poin;
break;
}
drag->value = value;
wm_dropbox_invoke(C, drag);
return drag;
}
void wm_drags_exit(wmWindowManager *wm, wmWindow *win)
{
bool any_active = false;
LISTBASE_FOREACH (const wmDrag *, drag, &wm->drags) {
if (drag->drop_state.active_dropbox) {
any_active = true;
break;
}
}
/* If there is no active drop-box #wm_drags_check_ops() set a stop-cursor, which needs to be
* restored. */
if (!any_active) {
WM_cursor_modal_restore(win);
/* Ensure the correct area cursor is restored. */
win->tag_cursor_refresh = true;
WM_event_add_mousemove(win);
}
}
static bContextStore *wm_drop_ui_context_create(const bContext *C)
{
uiBut *active_but = UI_region_active_but_get(CTX_wm_region(C));
if (!active_but) {
return NULL;
}
bContextStore *but_context = UI_but_context_get(active_but);
if (!but_context) {
return NULL;
}
return CTX_store_copy(but_context);
}
static void wm_drop_ui_context_free(bContextStore **context_store)
{
if (!*context_store) {
return;
}
CTX_store_free(*context_store);
*context_store = NULL;
}
void WM_event_drag_image(wmDrag *drag, ImBuf *imb, float scale)
{
drag->imb = imb;
drag->imbuf_scale = scale;
}
void WM_drag_data_free(int dragtype, void *poin)
{
/* Don't require all the callers to have a NULL-check, just allow passing NULL. */
if (!poin) {
return;
}
/* Not too nice, could become a callback. */
if (dragtype == WM_DRAG_ASSET) {
wmDragAsset *asset_data = poin;
wm_drag_free_asset_data(&asset_data);
}
else {
MEM_freeN(poin);
}
}
void WM_drag_free(wmDrag *drag)
{
if (drag->drop_state.active_dropbox && drag->drop_state.active_dropbox->draw_deactivate) {
drag->drop_state.active_dropbox->draw_deactivate(drag->drop_state.active_dropbox, drag);
}
if (drag->flags & WM_DRAG_FREE_DATA) {
WM_drag_data_free(drag->type, drag->poin);
}
wm_drop_ui_context_free(&drag->drop_state.ui_context);
if (drag->drop_state.free_disabled_info) {
MEM_SAFE_FREE(drag->drop_state.disabled_info);
}
BLI_freelistN(&drag->ids);
LISTBASE_FOREACH_MUTABLE (wmDragAssetListItem *, asset_item, &drag->asset_items) {
if (asset_item->is_external) {
wm_drag_free_asset_data(&asset_item->asset_data.external_info);
}
BLI_freelinkN(&drag->asset_items, asset_item);
}
MEM_freeN(drag);
}
void WM_drag_free_list(struct ListBase *lb)
{
wmDrag *drag;
while ((drag = BLI_pophead(lb))) {
WM_drag_free(drag);
}
}
static char *dropbox_tooltip(bContext *C, wmDrag *drag, const int xy[2], wmDropBox *drop)
{
char *tooltip = NULL;
if (drop->tooltip) {
tooltip = drop->tooltip(C, drag, xy, drop);
}
if (!tooltip) {
tooltip = BLI_strdup(WM_operatortype_name(drop->ot, drop->ptr));
}
/* XXX Doing translation here might not be ideal, but later we have no more
* access to ot (and hence op context)... */
return tooltip;
}
static wmDropBox *dropbox_active(bContext *C,
ListBase *handlers,
wmDrag *drag,
const wmEvent *event)
{
if (drag->drop_state.free_disabled_info) {
MEM_SAFE_FREE(drag->drop_state.disabled_info);
}
drag->drop_state.disabled_info = NULL;
LISTBASE_FOREACH (wmEventHandler *, handler_base, handlers) {
if (handler_base->type == WM_HANDLER_TYPE_DROPBOX) {
wmEventHandler_Dropbox *handler = (wmEventHandler_Dropbox *)handler_base;
if (handler->dropboxes) {
LISTBASE_FOREACH (wmDropBox *, drop, handler->dropboxes) {
if (drag->drop_state.ui_context) {
CTX_store_set(C, drag->drop_state.ui_context);
}
if (!drop->poll(C, drag, event)) {
/* If the drop's poll fails, don't set the disabled-info. This would be too aggressive.
* Instead show it only if the drop box could be used in principle, but the operator
* can't be executed. */
continue;
}
const wmOperatorCallContext opcontext = wm_drop_operator_context_get(drop);
if (WM_operator_poll_context(C, drop->ot, opcontext)) {
CTX_store_set(C, NULL);
return drop;
}
/* Attempt to set the disabled hint when the poll fails. Will always be the last hint set
* when there are multiple failing polls (could allow multiple disabled-hints too). */
bool free_disabled_info = false;
const char *disabled_hint = CTX_wm_operator_poll_msg_get(C, &free_disabled_info);
if (disabled_hint) {
drag->drop_state.disabled_info = disabled_hint;
drag->drop_state.free_disabled_info = free_disabled_info;
}
}
}
}
}
CTX_store_set(C, NULL);
return NULL;
}
/* return active operator tooltip/name when mouse is in box */
static wmDropBox *wm_dropbox_active(bContext *C, wmDrag *drag, const wmEvent *event)
{
wmWindow *win = CTX_wm_window(C);
wmDropBox *drop = dropbox_active(C, &win->handlers, drag, event);
if (!drop) {
ScrArea *area = CTX_wm_area(C);
drop = dropbox_active(C, &area->handlers, drag, event);
}
if (!drop) {
ARegion *region = CTX_wm_region(C);
drop = dropbox_active(C, ®ion->handlers, drag, event);
}
return drop;
}
/**
* Update dropping information for the current mouse position in \a event.
*/
static void wm_drop_update_active(bContext *C, wmDrag *drag, const wmEvent *event)
{
wmWindow *win = CTX_wm_window(C);
const int winsize_x = WM_window_pixels_x(win);
const int winsize_y = WM_window_pixels_y(win);
/* for multiwin drags, we only do this if mouse inside */
if (event->xy[0] < 0 || event->xy[1] < 0 || event->xy[0] > winsize_x ||
event->xy[1] > winsize_y) {
return;
}
/* Update UI context, before polling so polls can query this context. */
wm_drop_ui_context_free(&drag->drop_state.ui_context);
drag->drop_state.ui_context = wm_drop_ui_context_create(C);
wmDropBox *drop_prev = drag->drop_state.active_dropbox;
wmDropBox *drop = wm_dropbox_active(C, drag, event);
if (drop != drop_prev) {
if (drop_prev && drop_prev->draw_deactivate) {
drop_prev->draw_deactivate(drop_prev, drag);
BLI_assert(drop_prev->draw_data == NULL);
}
if (drop && drop->draw_activate) {
drop->draw_activate(drop, drag);
}
drag->drop_state.active_dropbox = drop;
drag->drop_state.area_from = drop ? CTX_wm_area(C) : NULL;
drag->drop_state.region_from = drop ? CTX_wm_region(C) : NULL;
}
if (!drag->drop_state.active_dropbox) {
wm_drop_ui_context_free(&drag->drop_state.ui_context);
}
}
void wm_drop_prepare(bContext *C, wmDrag *drag, wmDropBox *drop)
{
const wmOperatorCallContext opcontext = wm_drop_operator_context_get(drop);
if (drag->drop_state.ui_context) {
CTX_store_set(C, drag->drop_state.ui_context);
}
/* Optionally copy drag information to operator properties. Don't call it if the
* operator fails anyway, it might do more than just set properties (e.g.
* typically import an asset). */
if (drop->copy && WM_operator_poll_context(C, drop->ot, opcontext)) {
drop->copy(C, drag, drop);
}
wm_drags_exit(CTX_wm_manager(C), CTX_wm_window(C));
}
void wm_drop_end(bContext *C, wmDrag *UNUSED(drag), wmDropBox *UNUSED(drop))
{
CTX_store_set(C, NULL);
}
void wm_drags_check_ops(bContext *C, const wmEvent *event)
{
wmWindowManager *wm = CTX_wm_manager(C);
bool any_active = false;
LISTBASE_FOREACH (wmDrag *, drag, &wm->drags) {
wm_drop_update_active(C, drag, event);
if (drag->drop_state.active_dropbox) {
any_active = true;
}
}
/* Change the cursor to display that dropping isn't possible here. But only if there is something
* being dragged actually. Cursor will be restored in #wm_drags_exit(). */
if (!BLI_listbase_is_empty(&wm->drags)) {
WM_cursor_modal_set(CTX_wm_window(C), any_active ? WM_CURSOR_DEFAULT : WM_CURSOR_STOP);
}
}
wmOperatorCallContext wm_drop_operator_context_get(const wmDropBox *UNUSED(drop))
{
return WM_OP_INVOKE_DEFAULT;
}
/* ************** IDs ***************** */
void WM_drag_add_local_ID(wmDrag *drag, ID *id, ID *from_parent)
{
/* Don't drag the same ID twice. */
LISTBASE_FOREACH (wmDragID *, drag_id, &drag->ids) {
if (drag_id->id == id) {
if (drag_id->from_parent == NULL) {
drag_id->from_parent = from_parent;
}
return;
}
if (GS(drag_id->id->name) != GS(id->name)) {
BLI_assert_msg(0, "All dragged IDs must have the same type");
return;
}
}
/* Add to list. */
wmDragID *drag_id = MEM_callocN(sizeof(wmDragID), __func__);
drag_id->id = id;
drag_id->from_parent = from_parent;
BLI_addtail(&drag->ids, drag_id);
}
ID *WM_drag_get_local_ID(const wmDrag *drag, short idcode)
{
if (drag->type != WM_DRAG_ID) {
return NULL;
}
wmDragID *drag_id = drag->ids.first;
if (!drag_id) {
return NULL;
}
ID *id = drag_id->id;
return (idcode == 0 || GS(id->name) == idcode) ? id : NULL;
}
ID *WM_drag_get_local_ID_from_event(const wmEvent *event, short idcode)
{
if (event->custom != EVT_DATA_DRAGDROP) {
return NULL;
}
ListBase *lb = event->customdata;
return WM_drag_get_local_ID(lb->first, idcode);
}
bool WM_drag_is_ID_type(const wmDrag *drag, int idcode)
{
return WM_drag_get_local_ID(drag, idcode) || WM_drag_get_asset_data(drag, idcode);
}
wmDragAsset *WM_drag_create_asset_data(const AssetHandle *asset,
AssetMetaData *metadata,
const char *path,
int import_type)
{
wmDragAsset *asset_drag = MEM_mallocN(sizeof(*asset_drag), "wmDragAsset");
BLI_strncpy(asset_drag->name, ED_asset_handle_get_name(asset), sizeof(asset_drag->name));
asset_drag->metadata = metadata;
asset_drag->path = path;
asset_drag->id_type = ED_asset_handle_get_id_type(asset);
asset_drag->import_type = import_type;
return asset_drag;
}
static void wm_drag_free_asset_data(wmDragAsset **asset_data)
{
MEM_freeN((char *)(*asset_data)->path);
MEM_SAFE_FREE(*asset_data);
}
wmDragAsset *WM_drag_get_asset_data(const wmDrag *drag, int idcode)
{
if (drag->type != WM_DRAG_ASSET) {
return NULL;
}
wmDragAsset *asset_drag = drag->poin;
return (ELEM(idcode, 0, asset_drag->id_type)) ? asset_drag : NULL;
}
struct AssetMetaData *WM_drag_get_asset_meta_data(const wmDrag *drag, int idcode)
{
wmDragAsset *drag_asset = WM_drag_get_asset_data(drag, idcode);
if (drag_asset) {
return drag_asset->metadata;
}
ID *local_id = WM_drag_get_local_ID(drag, idcode);
if (local_id) {
return local_id->asset_data;
}
return NULL;
}
ID *WM_drag_asset_id_import(wmDragAsset *asset_drag, const int flag_extra)
{
/* Only support passing in limited flags. */
BLI_assert(flag_extra == (flag_extra & FILE_AUTOSELECT));
eFileSel_Params_Flag flag = flag_extra | FILE_ACTIVE_COLLECTION;
const char *name = asset_drag->name;
ID_Type idtype = asset_drag->id_type;
/* FIXME: Link/Append should happens in the operator called at the end of drop process, not from
* here. */
Main *bmain = CTX_data_main(asset_drag->evil_C);
Scene *scene = CTX_data_scene(asset_drag->evil_C);
ViewLayer *view_layer = CTX_data_view_layer(asset_drag->evil_C);
View3D *view3d = CTX_wm_view3d(asset_drag->evil_C);
switch ((eFileAssetImportType)asset_drag->import_type) {
case FILE_ASSET_IMPORT_LINK:
return WM_file_link_datablock(
bmain, scene, view_layer, view3d, asset_drag->path, idtype, name, flag);
case FILE_ASSET_IMPORT_APPEND:
return WM_file_append_datablock(bmain,
scene,
view_layer,
view3d,
asset_drag->path,
idtype,
name,
flag | BLO_LIBLINK_APPEND_RECURSIVE |
BLO_LIBLINK_APPEND_ASSET_DATA_CLEAR);
case FILE_ASSET_IMPORT_APPEND_REUSE:
return WM_file_append_datablock(G_MAIN,
scene,
view_layer,
view3d,
asset_drag->path,
idtype,
name,
flag | BLO_LIBLINK_APPEND_RECURSIVE |
BLO_LIBLINK_APPEND_ASSET_DATA_CLEAR |
BLO_LIBLINK_APPEND_LOCAL_ID_REUSE);
}
BLI_assert_unreachable();
return NULL;
}
bool WM_drag_asset_will_import_linked(const wmDrag *drag)
{
if (drag->type != WM_DRAG_ASSET) {
return false;
}
const wmDragAsset *asset_drag = WM_drag_get_asset_data(drag, 0);
return asset_drag->import_type == FILE_ASSET_IMPORT_LINK;
}
ID *WM_drag_get_local_ID_or_import_from_asset(const wmDrag *drag, int idcode)
{
if (!ELEM(drag->type, WM_DRAG_ASSET, WM_DRAG_ID)) {
return NULL;
}
if (drag->type == WM_DRAG_ID) {
return WM_drag_get_local_ID(drag, idcode);
}
wmDragAsset *asset_drag = WM_drag_get_asset_data(drag, idcode);
if (!asset_drag) {
return NULL;
}
/* Link/append the asset. */
return WM_drag_asset_id_import(asset_drag, 0);
}
void WM_drag_free_imported_drag_ID(struct Main *bmain, wmDrag *drag, wmDropBox *drop)
{
if (drag->type != WM_DRAG_ASSET) {
return;
}
wmDragAsset *asset_drag = WM_drag_get_asset_data(drag, 0);
if (!asset_drag) {
return;
}
/* Try to find the imported ID. For this to work either a "session_uuid" or "name" property must
* have been defined (see #WM_operator_properties_id_lookup()). */
ID *id = WM_operator_properties_id_lookup_from_name_or_session_uuid(
bmain, drop->ptr, asset_drag->id_type);
if (id != NULL) {
/* Do not delete the dragged ID if it has any user, otherwise if it is a 're-used' ID it will
* cause T95636. Note that we need first to add the user that we want to remove in
* #BKE_id_free_us. */
id_us_plus(id);
BKE_id_free_us(bmain, id);
}
}
wmDragAssetCatalog *WM_drag_get_asset_catalog_data(const wmDrag *drag)
{
if (drag->type != WM_DRAG_ASSET_CATALOG) {
return NULL;
}
return drag->poin;
}
void WM_drag_add_asset_list_item(
wmDrag *drag,
/* Context only needed for the hack in #ED_asset_handle_get_full_library_path(). */
const bContext *C,
const AssetLibraryReference *asset_library_ref,
const AssetHandle *asset)
{
BLI_assert(drag->type == WM_DRAG_ASSET_LIST);
/* No guarantee that the same asset isn't added twice. */
/* Add to list. */
wmDragAssetListItem *drag_asset = MEM_callocN(sizeof(*drag_asset), __func__);
ID *local_id = ED_asset_handle_get_local_id(asset);
if (local_id) {
drag_asset->is_external = false;
drag_asset->asset_data.local_id = local_id;
}
else {
AssetMetaData *metadata = ED_asset_handle_get_metadata(asset);
char asset_blend_path[FILE_MAX_LIBEXTRA];
ED_asset_handle_get_full_library_path(C, asset_library_ref, asset, asset_blend_path);
drag_asset->is_external = true;
drag_asset->asset_data.external_info = WM_drag_create_asset_data(
asset, metadata, BLI_strdup(asset_blend_path), FILE_ASSET_IMPORT_APPEND);
}
BLI_addtail(&drag->asset_items, drag_asset);
}
const ListBase *WM_drag_asset_list_get(const wmDrag *drag)
{
if (drag->type != WM_DRAG_ASSET_LIST) {
return NULL;
}
return &drag->asset_items;
}
/* ************** draw ***************** */
static void wm_drop_operator_draw(const char *name, int x, int y)
{
const uiFontStyle *fstyle = UI_FSTYLE_WIDGET;
/* Use the theme settings from tooltips. */
const bTheme *btheme = UI_GetTheme();
const uiWidgetColors *wcol = &btheme->tui.wcol_tooltip;
float col_fg[4], col_bg[4];
rgba_uchar_to_float(col_fg, wcol->text);
rgba_uchar_to_float(col_bg, wcol->inner);
UI_fontstyle_draw_simple_backdrop(fstyle, x, y, name, col_fg, col_bg);
}
static void wm_drop_redalert_draw(const char *redalert_str, int x, int y)
{
const uiFontStyle *fstyle = UI_FSTYLE_WIDGET;
const bTheme *btheme = UI_GetTheme();
const uiWidgetColors *wcol = &btheme->tui.wcol_tooltip;
float col_fg[4], col_bg[4];
UI_GetThemeColor4fv(TH_REDALERT, col_fg);
rgba_uchar_to_float(col_bg, wcol->inner);
UI_fontstyle_draw_simple_backdrop(fstyle, x, y, redalert_str, col_fg, col_bg);
}
const char *WM_drag_get_item_name(wmDrag *drag)
{
switch (drag->type) {
case WM_DRAG_ID: {
ID *id = WM_drag_get_local_ID(drag, 0);
bool single = (BLI_listbase_count_at_most(&drag->ids, 2) == 1);
if (single) {
return id->name + 2;
}
if (id) {
return BKE_idtype_idcode_to_name_plural(GS(id->name));
}
break;
}
case WM_DRAG_ASSET: {
const wmDragAsset *asset_drag = WM_drag_get_asset_data(drag, 0);
return asset_drag->name;
}
case WM_DRAG_PATH:
case WM_DRAG_NAME:
return drag->path;
}
return "";
}
static int wm_drag_imbuf_icon_width_get(const wmDrag *drag)
{
return round_fl_to_int(drag->imb->x * drag->imbuf_scale);
}
static int wm_drag_imbuf_icon_height_get(const wmDrag *drag)
{
return round_fl_to_int(drag->imb->y * drag->imbuf_scale);
}
static void wm_drag_draw_icon(bContext *UNUSED(C),
wmWindow *UNUSED(win),
wmDrag *drag,
const int xy[2])
{
int x, y;
/* This could also get the preview image of an ID when dragging one. But the big preview icon may
* actually not always be wanted, for example when dragging objects in the Outliner it gets in
* the way). So make the drag user set an image buffer explicitly (e.g. through
* #UI_but_drag_attach_image()). */
if (drag->imb) {
x = xy[0] - (wm_drag_imbuf_icon_width_get(drag) / 2);
y = xy[1] - (wm_drag_imbuf_icon_height_get(drag) / 2);
const float col[4] = {1.0f, 1.0f, 1.0f, 0.65f}; /* this blends texture */
IMMDrawPixelsTexState state = immDrawPixelsTexSetup(GPU_SHADER_2D_IMAGE_COLOR);
immDrawPixelsTexTiled_scaling(&state,
x,
y,
drag->imb->x,
drag->imb->y,
GPU_RGBA8,
false,
drag->imb->rect,
drag->imbuf_scale,
drag->imbuf_scale,
1.0f,
1.0f,
col);
}
else {
int padding = 4 * UI_DPI_FAC;
x = xy[0] - 2 * padding;
y = xy[1] - 2 * UI_DPI_FAC;
const uchar text_col[] = {255, 255, 255, 255};
UI_icon_draw_ex(x, y, drag->icon, U.inv_dpi_fac, 0.8, 0.0f, text_col, false);
}
}
static void wm_drag_draw_item_name(wmDrag *drag, const int x, const int y)
{
const uiFontStyle *fstyle = UI_FSTYLE_WIDGET;
const uchar text_col[] = {255, 255, 255, 255};
UI_fontstyle_draw_simple(fstyle, x, y, WM_drag_get_item_name(drag), text_col);
}
void WM_drag_draw_item_name_fn(bContext *UNUSED(C),
wmWindow *UNUSED(win),
wmDrag *drag,
const int xy[2])
{
int x = xy[0] + 10 * UI_DPI_FAC;
int y = xy[1] + 1 * UI_DPI_FAC;
wm_drag_draw_item_name(drag, x, y);
}
static void wm_drag_draw_tooltip(bContext *C, wmWindow *win, wmDrag *drag, const int xy[2])
{
if (!CTX_wm_region(C)) {
/* Some callbacks require the region. */
return;
}
int iconsize = UI_DPI_ICON_SIZE;
int padding = 4 * UI_DPI_FAC;
char *tooltip = NULL;
if (drag->drop_state.active_dropbox) {
tooltip = dropbox_tooltip(C, drag, xy, drag->drop_state.active_dropbox);
}
const bool has_disabled_info = drag->drop_state.disabled_info &&
drag->drop_state.disabled_info[0];
if (!tooltip && !has_disabled_info) {
return;
}
const int winsize_y = WM_window_pixels_y(win);
int x, y;
if (drag->imb) {
const int icon_width = wm_drag_imbuf_icon_width_get(drag);
const int icon_height = wm_drag_imbuf_icon_height_get(drag);
x = xy[0] - (icon_width / 2);
if (xy[1] + (icon_height / 2) + padding + iconsize < winsize_y) {
y = xy[1] + (icon_height / 2) + padding;
}
else {
y = xy[1] - (icon_height / 2) - padding - iconsize - padding - iconsize;
}
}
else {
x = xy[0] - 2 * padding;
if (xy[1] + iconsize + iconsize < winsize_y) {
y = (xy[1] + iconsize) + padding;
}
else {
y = (xy[1] - iconsize) - padding;
}
}
if (tooltip) {
wm_drop_operator_draw(tooltip, x, y);
MEM_freeN(tooltip);
}
else if (has_disabled_info) {
wm_drop_redalert_draw(drag->drop_state.disabled_info, x, y);
}
}
static void wm_drag_draw_default(bContext *C, wmWindow *win, wmDrag *drag, const int xy[2])
{
int xy_tmp[2] = {UNPACK2(xy)};
/* Image or icon. */
wm_drag_draw_icon(C, win, drag, xy_tmp);
/* Item name. */
if (drag->imb) {
int iconsize = UI_DPI_ICON_SIZE;
xy_tmp[0] = xy[0] - (wm_drag_imbuf_icon_width_get(drag) / 2);
xy_tmp[1] = xy[1] - (wm_drag_imbuf_icon_height_get(drag) / 2) - iconsize;
}
else {
xy_tmp[0] = xy[0] + 10 * UI_DPI_FAC;
xy_tmp[1] = xy[1] + 1 * UI_DPI_FAC;
}
wm_drag_draw_item_name(drag, UNPACK2(xy_tmp));
/* Operator name with roundbox. */
wm_drag_draw_tooltip(C, win, drag, xy);
}
void WM_drag_draw_default_fn(bContext *C, wmWindow *win, wmDrag *drag, const int xy[2])
{
wm_drag_draw_default(C, win, drag, xy);
}
void wm_drags_draw(bContext *C, wmWindow *win)
{
int xy[2];
if (ELEM(win->grabcursor, GHOST_kGrabWrap, GHOST_kGrabHide)) {
wm_cursor_position_get(win, &xy[0], &xy[1]);
}
else {
xy[0] = win->eventstate->xy[0];
xy[1] = win->eventstate->xy[1];
}
bScreen *screen = CTX_wm_screen(C);
/* To start with, use the area and region under the mouse cursor, just like event handling. The
* operator context may still override it. */
ScrArea *area = BKE_screen_find_area_xy(screen, SPACE_TYPE_ANY, xy);
ARegion *region = ED_area_find_region_xy_visual(area, RGN_TYPE_ANY, xy);
/* Will be overridden and unset eventually. */
BLI_assert(!CTX_wm_area(C) && !CTX_wm_region(C));
wmWindowManager *wm = CTX_wm_manager(C);
/* Should we support multi-line drag draws? Maybe not, more types mixed won't work well. */
GPU_blend(GPU_BLEND_ALPHA);
LISTBASE_FOREACH (wmDrag *, drag, &wm->drags) {
if (drag->drop_state.active_dropbox) {
CTX_wm_area_set(C, drag->drop_state.area_from);
CTX_wm_region_set(C, drag->drop_state.region_from);
CTX_store_set(C, drag->drop_state.ui_context);
if (region && drag->drop_state.active_dropbox->draw_in_view) {
wmViewport(®ion->winrct);
drag->drop_state.active_dropbox->draw_in_view(C, win, drag, xy);
wmWindowViewport(win);
}
/* Drawing should be allowed to assume the context from handling and polling (that's why we
* restore it above). */
if (drag->drop_state.active_dropbox->draw_droptip) {
drag->drop_state.active_dropbox->draw_droptip(C, win, drag, xy);
continue;
}
}
else if (region) {
CTX_wm_area_set(C, area);
CTX_wm_region_set(C, region);
}
wm_drag_draw_default(C, win, drag, xy);
}
GPU_blend(GPU_BLEND_NONE);
CTX_wm_area_set(C, NULL);
CTX_wm_region_set(C, NULL);
CTX_store_set(C, NULL);
}
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