488 lines
23 KiB
C++
488 lines
23 KiB
C++
//====== Copyright 1996-2013, Valve Corporation, All rights reserved. =======
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//
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// Purpose: interface to display html pages in a texture
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//
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//=============================================================================
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#ifndef ISTEAMHTMLSURFACE_H
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#define ISTEAMHTMLSURFACE_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "isteamclient.h"
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typedef uint32 HHTMLBrowser;
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const uint32 INVALID_HTMLBROWSER = 0;
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//-----------------------------------------------------------------------------
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// Purpose: Functions for displaying HTML pages and interacting with them
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//-----------------------------------------------------------------------------
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class ISteamHTMLSurface {
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public:
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virtual ~ISteamHTMLSurface() {}
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// Must call init and shutdown when starting/ending use of the interface
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virtual bool Init() = 0;
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virtual bool Shutdown() = 0;
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// Create a browser object for display of a html page, when creation is
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// complete the call handle will return a HTML_BrowserReady_t callback for
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// the HHTMLBrowser of your new browser.
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// The user agent string is a substring to be added to the general user
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// agent string so you can
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// identify your client on web servers.
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// The userCSS string lets you apply a CSS style sheet to every displayed
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// page, leave null if
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// you do not require this functionality.
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virtual SteamAPICall_t CreateBrowser(const char *pchUserAgent,
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const char *pchUserCSS) = 0;
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// Call this when you are done with a html surface, this lets us free the
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// resources being used by it
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virtual void RemoveBrowser(HHTMLBrowser unBrowserHandle) = 0;
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// Navigate to this URL, results in a HTML_StartRequest_t as the request
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// commences
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virtual void LoadURL(HHTMLBrowser unBrowserHandle, const char *pchURL,
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const char *pchPostData) = 0;
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// Tells the surface the size in pixels to display the surface
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virtual void SetSize(HHTMLBrowser unBrowserHandle, uint32 unWidth,
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uint32 unHeight) = 0;
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// Stop the load of the current html page
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virtual void StopLoad(HHTMLBrowser unBrowserHandle) = 0;
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// Reload (most likely from local cache) the current page
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virtual void Reload(HHTMLBrowser unBrowserHandle) = 0;
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// navigate back in the page history
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virtual void GoBack(HHTMLBrowser unBrowserHandle) = 0;
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// navigate forward in the page history
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virtual void GoForward(HHTMLBrowser unBrowserHandle) = 0;
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// add this header to any url requests from this browser
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virtual void AddHeader(HHTMLBrowser unBrowserHandle, const char *pchKey,
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const char *pchValue) = 0;
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// run this javascript script in the currently loaded page
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virtual void ExecuteJavascript(HHTMLBrowser unBrowserHandle,
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const char *pchScript) = 0;
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enum EHTMLMouseButton {
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eHTMLMouseButton_Left = 0,
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eHTMLMouseButton_Right = 1,
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eHTMLMouseButton_Middle = 2,
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};
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// Mouse click and mouse movement commands
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virtual void MouseUp(HHTMLBrowser unBrowserHandle,
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EHTMLMouseButton eMouseButton) = 0;
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virtual void MouseDown(HHTMLBrowser unBrowserHandle,
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EHTMLMouseButton eMouseButton) = 0;
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virtual void MouseDoubleClick(HHTMLBrowser unBrowserHandle,
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EHTMLMouseButton eMouseButton) = 0;
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// x and y are relative to the HTML bounds
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virtual void MouseMove(HHTMLBrowser unBrowserHandle, int x, int y) = 0;
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// nDelta is pixels of scroll
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virtual void MouseWheel(HHTMLBrowser unBrowserHandle, int32 nDelta) = 0;
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enum EMouseCursor {
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dc_user = 0,
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dc_none,
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dc_arrow,
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dc_ibeam,
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dc_hourglass,
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dc_waitarrow,
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dc_crosshair,
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dc_up,
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dc_sizenw,
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dc_sizese,
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dc_sizene,
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dc_sizesw,
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dc_sizew,
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dc_sizee,
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dc_sizen,
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dc_sizes,
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dc_sizewe,
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dc_sizens,
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dc_sizeall,
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dc_no,
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dc_hand,
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dc_blank, // don't show any custom cursor, just use your default
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dc_middle_pan,
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dc_north_pan,
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dc_north_east_pan,
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dc_east_pan,
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dc_south_east_pan,
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dc_south_pan,
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dc_south_west_pan,
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dc_west_pan,
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dc_north_west_pan,
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dc_alias,
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dc_cell,
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dc_colresize,
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dc_copycur,
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dc_verticaltext,
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dc_rowresize,
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dc_zoomin,
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dc_zoomout,
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dc_help,
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dc_custom,
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dc_last, // custom cursors start from this value and up
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};
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enum EHTMLKeyModifiers {
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k_eHTMLKeyModifier_None = 0,
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k_eHTMLKeyModifier_AltDown = 1 << 0,
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k_eHTMLKeyModifier_CtrlDown = 1 << 1,
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k_eHTMLKeyModifier_ShiftDown = 1 << 2,
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};
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// keyboard interactions, native keycode is the virtual key code value from
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// your OS
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virtual void KeyDown(HHTMLBrowser unBrowserHandle, uint32 nNativeKeyCode,
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EHTMLKeyModifiers eHTMLKeyModifiers) = 0;
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virtual void KeyUp(HHTMLBrowser unBrowserHandle, uint32 nNativeKeyCode,
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EHTMLKeyModifiers eHTMLKeyModifiers) = 0;
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// cUnicodeChar is the unicode character point for this keypress (and
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// potentially multiple chars per press)
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virtual void KeyChar(HHTMLBrowser unBrowserHandle, uint32 cUnicodeChar,
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EHTMLKeyModifiers eHTMLKeyModifiers) = 0;
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// programmatically scroll this many pixels on the page
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virtual void SetHorizontalScroll(HHTMLBrowser unBrowserHandle,
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uint32 nAbsolutePixelScroll) = 0;
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virtual void SetVerticalScroll(HHTMLBrowser unBrowserHandle,
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uint32 nAbsolutePixelScroll) = 0;
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// tell the html control if it has key focus currently, controls showing the
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// I-beam cursor in text controls amongst other things
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virtual void SetKeyFocus(HHTMLBrowser unBrowserHandle,
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bool bHasKeyFocus) = 0;
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// open the current pages html code in the local editor of choice, used for
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// debugging
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virtual void ViewSource(HHTMLBrowser unBrowserHandle) = 0;
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// copy the currently selected text on the html page to the local clipboard
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virtual void CopyToClipboard(HHTMLBrowser unBrowserHandle) = 0;
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// paste from the local clipboard to the current html page
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virtual void PasteFromClipboard(HHTMLBrowser unBrowserHandle) = 0;
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// find this string in the browser, if bCurrentlyInFind is true then instead
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// cycle to the next matching element
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virtual void Find(HHTMLBrowser unBrowserHandle, const char *pchSearchStr,
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bool bCurrentlyInFind, bool bReverse) = 0;
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// cancel a currently running find
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virtual void StopFind(HHTMLBrowser unBrowserHandle) = 0;
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// return details about the link at position x,y on the current page
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virtual void GetLinkAtPosition(HHTMLBrowser unBrowserHandle, int x,
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int y) = 0;
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// set a webcookie for the hostname in question
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virtual void SetCookie(const char *pchHostname, const char *pchKey,
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const char *pchValue, const char *pchPath = "/",
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RTime32 nExpires = 0, bool bSecure = false,
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bool bHTTPOnly = false) = 0;
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// Zoom the current page by flZoom ( from 0.0 to 2.0, so to zoom to 120%
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// use 1.2 ), zooming around point X,Y in the page (use 0,0 if you don't
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// care)
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virtual void SetPageScaleFactor(HHTMLBrowser unBrowserHandle, float flZoom,
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int nPointX, int nPointY) = 0;
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// Enable/disable low-resource background mode, where javascript and repaint
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// timers are throttled, resources are more aggressively purged from memory,
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// and audio/video elements are paused. When background mode is enabled, all
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// HTML5 video and audio objects will execute ".pause()" and gain the
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// property "._steam_background_paused = 1". When background mode is
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// disabled, any video or audio objects with that property will resume with
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// ".play()".
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virtual void SetBackgroundMode(HHTMLBrowser unBrowserHandle,
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bool bBackgroundMode) = 0;
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// CALLBACKS
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//
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// These set of functions are used as responses to callback requests
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//
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// You MUST call this in response to a HTML_StartRequest_t callback
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// Set bAllowed to true to allow this navigation, false to cancel it and
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// stay
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// on the current page. You can use this feature to limit the valid pages
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// allowed in your HTML surface.
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virtual void AllowStartRequest(HHTMLBrowser unBrowserHandle,
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bool bAllowed) = 0;
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// You MUST call this in response to a HTML_JSAlert_t or HTML_JSConfirm_t
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// callback
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// Set bResult to true for the OK option of a confirm, use false otherwise
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virtual void JSDialogResponse(HHTMLBrowser unBrowserHandle,
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bool bResult) = 0;
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// You MUST call this in response to a HTML_FileOpenDialog_t callback
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virtual void FileLoadDialogResponse(HHTMLBrowser unBrowserHandle,
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const char **pchSelectedFiles) = 0;
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};
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#define STEAMHTMLSURFACE_INTERFACE_VERSION \
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"STEAMHTMLSURFACE_INTERFACE_VERSION_003"
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// callbacks
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#if defined(VALVE_CALLBACK_PACK_SMALL)
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#pragma pack(push, 4)
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#elif defined(VALVE_CALLBACK_PACK_LARGE)
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#pragma pack(push, 8)
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#else
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#error isteamclient.h must be included
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#endif
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//-----------------------------------------------------------------------------
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// Purpose: The browser is ready for use
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_BrowserReady_t, k_iSteamHTMLSurfaceCallbacks + 1)
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CALLBACK_MEMBER(0, HHTMLBrowser,
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unBrowserHandle) // this browser is now fully created and ready
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// to navigate to pages
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END_DEFINE_CALLBACK_1()
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//-----------------------------------------------------------------------------
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// Purpose: the browser has a pending paint
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_NeedsPaint_t, k_iSteamHTMLSurfaceCallbacks + 2)
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CALLBACK_MEMBER(0, HHTMLBrowser,
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unBrowserHandle) // the browser that needs the paint
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CALLBACK_MEMBER(1, const char *,
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pBGRA) // a pointer to the B8G8R8A8 data for this surface,
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// valid until SteamAPI_RunCallbacks is next called
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CALLBACK_MEMBER(2, uint32, unWide) // the total width of the pBGRA texture
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CALLBACK_MEMBER(3, uint32, unTall) // the total height of the pBGRA texture
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CALLBACK_MEMBER(
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4, uint32,
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unUpdateX) // the offset in X for the damage rect for this update
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CALLBACK_MEMBER(
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5, uint32,
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unUpdateY) // the offset in Y for the damage rect for this update
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CALLBACK_MEMBER(6, uint32,
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unUpdateWide) // the width of the damage rect for this update
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CALLBACK_MEMBER(7, uint32,
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unUpdateTall) // the height of the damage rect for this update
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CALLBACK_MEMBER(8, uint32, unScrollX) // the page scroll the browser was at
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// when this texture was rendered
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CALLBACK_MEMBER(9, uint32, unScrollY) // the page scroll the browser was at
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// when this texture was rendered
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CALLBACK_MEMBER(
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10, float, flPageScale) // the page scale factor on this page when rendered
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CALLBACK_MEMBER(
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11, uint32,
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unPageSerial) // incremented on each new page load, you can use this to
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// reject draws while navigating to new pages
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END_DEFINE_CALLBACK_12()
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//-----------------------------------------------------------------------------
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// Purpose: The browser wanted to navigate to a new page
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// NOTE - you MUST call AllowStartRequest in response to this callback
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_StartRequest_t, k_iSteamHTMLSurfaceCallbacks + 3)
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CALLBACK_MEMBER(0, HHTMLBrowser,
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unBrowserHandle) // the handle of the surface navigating
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CALLBACK_MEMBER(1, const char *, pchURL) // the url they wish to navigate to
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CALLBACK_MEMBER(2, const char *, pchTarget) // the html link target type (i.e
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// _blank, _self, _parent, _top )
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CALLBACK_MEMBER(3, const char *,
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pchPostData) // any posted data for the request
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CALLBACK_MEMBER(4, bool, bIsRedirect) // true if this was a http/html redirect
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// from the last load request
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END_DEFINE_CALLBACK_5()
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//-----------------------------------------------------------------------------
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// Purpose: The browser has been requested to close due to user interaction
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// (usually from a javascript window.close() call)
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_CloseBrowser_t, k_iSteamHTMLSurfaceCallbacks + 4)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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END_DEFINE_CALLBACK_1()
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//-----------------------------------------------------------------------------
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// Purpose: the browser is navigating to a new url
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_URLChanged_t, k_iSteamHTMLSurfaceCallbacks + 5)
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CALLBACK_MEMBER(0, HHTMLBrowser,
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unBrowserHandle) // the handle of the surface navigating
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CALLBACK_MEMBER(1, const char *, pchURL) // the url they wish to navigate to
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CALLBACK_MEMBER(2, const char *,
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pchPostData) // any posted data for the request
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CALLBACK_MEMBER(3, bool, bIsRedirect) // true if this was a http/html redirect
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// from the last load request
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CALLBACK_MEMBER(4, const char *, pchPageTitle) // the title of the page
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CALLBACK_MEMBER(5, bool, bNewNavigation) // true if this was from a fresh tab
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// and not a click on an existing page
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END_DEFINE_CALLBACK_6()
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//-----------------------------------------------------------------------------
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// Purpose: A page is finished loading
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_FinishedRequest_t, k_iSteamHTMLSurfaceCallbacks + 6)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, const char *, pchURL) //
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CALLBACK_MEMBER(2, const char *, pchPageTitle) //
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END_DEFINE_CALLBACK_3()
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//-----------------------------------------------------------------------------
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// Purpose: a request to load this url in a new tab
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_OpenLinkInNewTab_t, k_iSteamHTMLSurfaceCallbacks + 7)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, const char *, pchURL) //
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END_DEFINE_CALLBACK_2()
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//-----------------------------------------------------------------------------
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// Purpose: the page has a new title now
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_ChangedTitle_t, k_iSteamHTMLSurfaceCallbacks + 8)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, const char *, pchTitle) //
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END_DEFINE_CALLBACK_2()
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//-----------------------------------------------------------------------------
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// Purpose: results from a search
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_SearchResults_t, k_iSteamHTMLSurfaceCallbacks + 9)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, uint32, unResults) //
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CALLBACK_MEMBER(2, uint32, unCurrentMatch) //
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END_DEFINE_CALLBACK_3()
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//-----------------------------------------------------------------------------
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// Purpose: page history status changed on the ability to go backwards and
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// forward
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_CanGoBackAndForward_t, k_iSteamHTMLSurfaceCallbacks + 10)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, bool, bCanGoBack) //
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CALLBACK_MEMBER(2, bool, bCanGoForward) //
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END_DEFINE_CALLBACK_3()
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//-----------------------------------------------------------------------------
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// Purpose: details on the visibility and size of the horizontal scrollbar
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_HorizontalScroll_t, k_iSteamHTMLSurfaceCallbacks + 11)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, uint32, unScrollMax) //
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CALLBACK_MEMBER(2, uint32, unScrollCurrent) //
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CALLBACK_MEMBER(3, float, flPageScale) //
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CALLBACK_MEMBER(4, bool, bVisible) //
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CALLBACK_MEMBER(5, uint32, unPageSize) //
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END_DEFINE_CALLBACK_6()
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//-----------------------------------------------------------------------------
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// Purpose: details on the visibility and size of the vertical scrollbar
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_VerticalScroll_t, k_iSteamHTMLSurfaceCallbacks + 12)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, uint32, unScrollMax) //
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CALLBACK_MEMBER(2, uint32, unScrollCurrent) //
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CALLBACK_MEMBER(3, float, flPageScale) //
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CALLBACK_MEMBER(4, bool, bVisible) //
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CALLBACK_MEMBER(5, uint32, unPageSize) //
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END_DEFINE_CALLBACK_6()
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//-----------------------------------------------------------------------------
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// Purpose: response to GetLinkAtPosition call
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_LinkAtPosition_t, k_iSteamHTMLSurfaceCallbacks + 13)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, uint32, x) // NOTE - Not currently set
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CALLBACK_MEMBER(2, uint32, y) // NOTE - Not currently set
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CALLBACK_MEMBER(3, const char *, pchURL) //
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CALLBACK_MEMBER(4, bool, bInput) //
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CALLBACK_MEMBER(5, bool, bLiveLink) //
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END_DEFINE_CALLBACK_6()
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//-----------------------------------------------------------------------------
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// Purpose: show a Javascript alert dialog, call JSDialogResponse
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// when the user dismisses this dialog (or right away to ignore it)
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_JSAlert_t, k_iSteamHTMLSurfaceCallbacks + 14)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, const char *, pchMessage) //
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END_DEFINE_CALLBACK_2()
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//-----------------------------------------------------------------------------
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// Purpose: show a Javascript confirmation dialog, call JSDialogResponse
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// when the user dismisses this dialog (or right away to ignore it)
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_JSConfirm_t, k_iSteamHTMLSurfaceCallbacks + 15)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, const char *, pchMessage) //
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END_DEFINE_CALLBACK_2()
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//-----------------------------------------------------------------------------
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// Purpose: when received show a file open dialog
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// then call FileLoadDialogResponse with the file(s) the user selected.
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_FileOpenDialog_t, k_iSteamHTMLSurfaceCallbacks + 16)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, const char *, pchTitle) //
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CALLBACK_MEMBER(2, const char *, pchInitialFile) //
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END_DEFINE_CALLBACK_3()
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//-----------------------------------------------------------------------------
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// Purpose: a new html window has been created
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_NewWindow_t, k_iSteamHTMLSurfaceCallbacks + 21)
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CALLBACK_MEMBER(0, HHTMLBrowser,
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unBrowserHandle) // the handle of the current surface
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CALLBACK_MEMBER(1, const char *, pchURL) // the page to load
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CALLBACK_MEMBER(2, uint32, unX) // the x pos into the page to display the popup
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CALLBACK_MEMBER(3, uint32, unY) // the y pos into the page to display the popup
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CALLBACK_MEMBER(4, uint32, unWide) // the total width of the pBGRA texture
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CALLBACK_MEMBER(5, uint32, unTall) // the total height of the pBGRA texture
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CALLBACK_MEMBER(
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6, HHTMLBrowser,
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unNewWindow_BrowserHandle) // the handle of the new window surface
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END_DEFINE_CALLBACK_7()
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//-----------------------------------------------------------------------------
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// Purpose: change the cursor to display
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_SetCursor_t, k_iSteamHTMLSurfaceCallbacks + 22)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, uint32, eMouseCursor) // the EMouseCursor to display
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END_DEFINE_CALLBACK_2()
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//-----------------------------------------------------------------------------
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// Purpose: informational message from the browser
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_StatusText_t, k_iSteamHTMLSurfaceCallbacks + 23)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, const char *, pchMsg) // the EMouseCursor to display
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END_DEFINE_CALLBACK_2()
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//-----------------------------------------------------------------------------
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// Purpose: show a tooltip
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_ShowToolTip_t, k_iSteamHTMLSurfaceCallbacks + 24)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, const char *, pchMsg) // the EMouseCursor to display
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END_DEFINE_CALLBACK_2()
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//-----------------------------------------------------------------------------
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// Purpose: update the text of an existing tooltip
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_UpdateToolTip_t, k_iSteamHTMLSurfaceCallbacks + 25)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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CALLBACK_MEMBER(1, const char *, pchMsg) // the EMouseCursor to display
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END_DEFINE_CALLBACK_2()
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//-----------------------------------------------------------------------------
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// Purpose: hide the tooltip you are showing
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//-----------------------------------------------------------------------------
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DEFINE_CALLBACK(HTML_HideToolTip_t, k_iSteamHTMLSurfaceCallbacks + 26)
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CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
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END_DEFINE_CALLBACK_1()
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#pragma pack(pop)
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#endif // ISTEAMHTMLSURFACE_H
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